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Pressure injury staging classifies a pressure injury by the deepest tissue exposed or damaged, using the NPIAP system of four numbered stages plus unstageable and deep tissue pressure injury, last revised in 2016. Wound care and bedside nurses stage the wound, the provider documents the diagnosis, and coders, surveyors, and payers read both entries against each other. This page covers how to document the stage and its present-on-admission status, with a fictional sample.
Registered nurses at the bedside, in long-term care, and in home health, who describe and stage the wound; wound, ostomy, and continence nurses who confirm difficult stages; physicians, advanced practice providers, and podiatrists who document the diagnosis and present-on-admission status; no license or publisher qualification level applies to staging itself
Wound care teams, attending physicians and hospitalists, clinical documentation integrity specialists and coders, quality and patient safety staff, MDS and OASIS coordinators, CMS and state surveyors, accreditation reviewers, payers, and expert reviewers in pressure injury claims
6 to 14 chart lines per wound (location and laterality, stage with the date first identified, present-on-admission status, measurements, wound bed, exudate, edges and periwound, pain, device or mucosal qualifier, photograph, treatment, reassessment) · 5 to 10 minutes by hand after the wound has been examined
Observer-rated anatomic classification of an existing wound (Stage 1 to Stage 4 by the deepest tissue exposed, plus unstageable and deep tissue pressure injury as categories rather than intermediate stages; medical device related injuries staged by depth; mucosal membrane injuries not staged)
Admission and transfer skin inspections, first identification of any skin change over a pressure point or under a device, weekly wound reassessment, change in wound status or debridement, MDS and OASIS assessment time points, discharge and transfer summaries, and quality or incident review of a hospital-acquired injury
NPIAP staging system (first issued 1989, revised 2007 and 2016) with the NPIAP, EPUAP, and PPPIA International Guideline; the stage definitions and illustrations are NPIAP copyright used only by permission; CMS coding, HAC, MDS, and OASIS rules govern how the stage is reported; described here for documentation, no definitions reproduced
Pressure injury staging is the classification of a pressure injury by the deepest layer of tissue that has been exposed or damaged. The system in use across the United States, Canada, and Australia is the one maintained by the National Pressure Injury Advisory Panel (NPIAP, known until 2019 as the National Pressure Ulcer Advisory Panel), first issued at a 1989 consensus conference, revised in 2007 when the unstageable and deep tissue categories were added, and revised again at an April 2016 consensus conference (Edsberg and colleagues, Journal of WOCN, 2016), when the term injury replaced ulcer, Arabic numerals replaced Roman numerals, the word suspected was dropped from the deep tissue category, and medical device related and mucosal membrane pressure injuries were defined. The published stage definitions and the illustrations that accompany them are NPIAP intellectual property and are not reproduced here; in original words, the categories run as follows. In a Stage 1 injury the skin surface is unbroken, but an area over a pressure point has changed color and the change does not fade when you press on it and release; in darker skin it may show as a difference in tone, warmth, or firmness rather than redness. In a Stage 2 injury the upper layers of skin are gone and the shallow base is still living skin tissue, pink to red in color, with no fat showing; a blister filled with clear fluid, intact or broken, also belongs here. In a Stage 3 injury the wound passes through the whole thickness of the skin so that the fat beneath it can be seen, sometimes with rolled edges, dead tissue, or pockets extending sideways or downward, but nothing deeper than fat is exposed. In a Stage 4 injury the wound has passed through skin and fat to structures such as muscle, tendon, ligament, cartilage, or bone, which can be seen or felt at the base. An unstageable injury is a full-thickness wound whose base is hidden under dead tissue, so the true depth cannot be assigned until enough of that tissue is removed; it is a depth not yet known, not a stage beyond 4. A deep tissue pressure injury is a deep, bruise-like, purple or maroon area or a blood-filled blister over intact or broken skin, marking damage that began in the deeper tissue before the surface changed; it may resolve or open to reveal its real depth. A medical device related injury is caused by tubing, a cannula, a collar, a cast, a mask, or another device, usually takes the device's shape, and is staged by depth like any other, except that an injury on a mucous membrane (nose, mouth, urethra, or other mucosa) has no skin layers to grade and receives no numeric stage.
Three facts carry the documentation. First, staging classifies existing damage; it does not predict risk, so it sits beside, and never replaces, the risk assessment on the Braden Scale page and the skin inspection that finds the wound in the first place. Second, the stage records the deepest damage the wound ever reached and is never reduced as the wound heals: a healing wound fills its defect with granulation and scar tissue rather than regrowing the muscle, fat, or dermis it lost, which is why the NPUAP's 2000 position statement rejected reverse staging and why the MDS and OASIS instructions still forbid it; progress is described by the wound's own characteristics or a validated healing tool, and a healed wound is a healed injury at the stage it reached. Third, the stage and the diagnosis come from different people. The ICD-10-CM Official Guidelines let a coder take the pressure ulcer stage from the documentation of a clinician who is not the patient's provider, and note that a nurse often documents it, while the pressure ulcer diagnosis itself must come from the provider, and conflicting entries have to be resolved by a query; the coding category L89 also still carries the older ulcer terminology, so the 2016 change to injury has not reached the codes or the MDS and OASIS item names. Everything else on this page follows from those three facts, including the present-on-admission determination that decides payment and public reporting and the qualifiers that keep a device or mucosal injury from being misread. The OASIS assessment page covers the home health items that receive the stage; the risk-tool total belongs to the Braden page; and a hospital-acquired injury that a facility treats as an event is reported through the incident report as a separate document from the wound record.
Bedside nurses on medical, surgical, orthopedic, and critical care units document the first finding at the admission or transfer skin inspection, at the unit's scheduled reassessment, and whenever a device site or pressure point changes, and the admission entry is the one that later decides whether an injury was present on admission. Wound, ostomy, and continence nurses confirm the stage where the depth is uncertain, measure and photograph on a schedule, and describe healing at the weekly reassessment most facilities adopt. Long-term care nurses stage for MDS 3.0 Section M and the F686 care plan, and home health nurses for the OASIS pressure injury items at start of care, resumption, follow-up, transfer, and discharge. Hospitalists, attending physicians, advanced practice providers, and podiatrists write the diagnosis, the site, the etiology, and the present-on-admission status that a coder needs, often in a consultation report when a wound service is involved. Clinical documentation integrity specialists and coders read the two sets of entries against each other and query when they disagree; quality and patient safety staff, MDS and OASIS coordinators, surveyors, and accreditation reviewers read the same record for hospital-acquired injuries. The staging page owns one job: the stage, the present-on-admission determination, the wound description, the device or mucosal qualifier, the photograph conventions, and healing described without reverse staging. Neighbors take over from there: risk belongs to the Braden Scale, the injury travels in the transfer of care summary and the discharge summary, the interdisciplinary plan sits in the care coordination note, the home health item set is on the OASIS assessment page, and a facility-acquired injury treated as an event goes through the incident report.
No regulator prescribes a staging note format; what exists is a copyrighted classification, coding rules that decide who may document what, payment and reporting rules that turn on the present-on-admission determination, and facility policies that set the reassessment interval and the photography rules. What survives review is an entry that names the site with its side and the etiology, states one stage or category with the date it was first seen and the rater, records the present-on-admission determination on the evidence of the admission inspection, measures and describes the wound by a stated method, carries the device or mucosal qualifier, documents the photograph and its consent, and describes healing by the wound's characteristics while the stage stays where it was. Each element below carries the pitfall that most often undermines it.
Location, laterality, and etiology. Name the anatomic site and the side (left ischial tuberosity, right lateral heel, sacrum at midline), place it on the body map, and state why it is a pressure injury: the location over a bony prominence or under a named device, the shape, and the history of pressure or shear. Say what it is not when a look-alike is possible: moisture-associated skin damage and incontinence-associated dermatitis are moisture injuries and are not staged; skin tears are mechanical trauma; arterial, venous, and diabetic foot ulcers have their own classification systems and their own codes. One wound per entry, each with its own stage, because the coder assigns a code for every pressure injury the patient has. Pitfall: "Sacral wound" with no side or map reference, or a moist perineal skin loss from incontinence staged as a Stage 2 pressure injury.
Stage or category, date first identified, and rater. Write one stage or category for the wound with the date and time it was first identified and who staged it, and describe the depth in plain words that a reader could check against the wound (skin intact, skin loss with the base still skin, fat visible, structure visible or palpable, base hidden by dead tissue, dark intact discoloration). Unstageable and deep tissue pressure injury are categories, not intermediate steps: an unstageable wound is a full-thickness wound of unknown depth, and a deep tissue pressure injury may resolve or open to reveal its stage. A mucosal membrane injury is documented as a pressure injury and given no numeric stage. Then make sure the provider's note carries the diagnosis for the same wound, the same site, and the etiology, because the coder may take the stage from your entry but must take the diagnosis from the provider. Pitfall: A stage in the nursing flowsheet with no provider diagnosis anywhere in the record, or a provider note reading only decubitus ulcer with no site while the nurse has staged three wounds.
Present-on-admission determination and its timing. Record the time of the inpatient admission order and the time of the admission skin inspection, and state whether the wound was present at that inspection, because CMS defines present on admission as present at the time the order for inpatient admission occurs, and conditions that develop in the emergency department, in observation, or in outpatient surgery before that order count as present on admission. There is no 24- or 48-hour window in that definition: a facility's rule that an injury found within a set number of hours is presumed present is a local convention, and the guidelines say there is no required timeframe by which a provider must document a condition as present on admission. When the admission inspection was late or incomplete, say so, document the earliest reliable finding, and leave the determination to the provider, who may record it as undetermined; do not assert present on admission from a later finding. Pitfall: "POA" charted on day four with no admission inspection to support it, or a unit's 24-hour presumption written into the note as a CMS rule.
Measurements, wound bed, exudate, edges, and periwound. Measure length head to toe and width perpendicular to it in centimeters, depth at the deepest point with a probe, and any undermining or tunneling by clock-face position and distance, and name the method so the next measurement is comparable. Describe the wound bed by tissue type with percentages that add to 100 (granulation, slough, eschar, and any exposed structure), the exudate by amount, type, and odor, the edges (attached, rolled, undermined), the surrounding skin (intact, red, macerated, indurated, warm), and pain at rest and with care. Depth is the least reliable dimension and photographs distort it, so the probe measurement and the tissue description are what a reviewer trusts; write the numbers, not moderate or large. Pitfall: "Approximately 3 cm, moderate depth," percentages that add to 130, or a wound bed described only as "see photo."
Device-related and mucosal qualifiers. When a device caused the injury, name the device (nasal cannula, endotracheal tube holder, cervical collar, cast edge, pulse oximeter probe, non-invasive ventilation mask), state the fit and the time it had been in place, and record what changed (repositioned, padded, resized, removed) alongside the stage by depth. When the injury is on mucous membrane, write pressure injury of the named mucosal site, device related, not stageable, and describe it in words and measurements; MDS and OASIS instructions do not stage mucosal injuries either. The qualifier is what tells a quality reviewer that the prevention bundle for the device, not the mattress and turning schedule, was the gap. Pitfall: "Stage 2 pressure injury, nasal septum" with a numeric stage on mucosa, or a device injury with the device never named.
Photograph and consent. No federal rule requires a photograph of every pressure injury; photography follows facility policy and wound society guidance and is a health record entry like any other, so the photograph is protected health information and needs the consent your policy and state law require. Chart that the photograph was taken, the consent obtained (written, verbal, or under a general admission consent, as policy allows), the date and time, that a ruler and patient identifier were in the frame, and where the image is stored, and describe the wound in words in the same entry, because a photograph supports the written description and never replaces it. A dated photograph from the admission inspection is the strongest possible support for a present-on-admission determination. Pitfall: An undated, unlabeled image in a media tab with no consent noted, or a note that reads only see photo where the description should be.
Healing, reassessment, and the nurse-provider match. Describe progress by the wound's own characteristics (smaller measurements, less dead tissue, more granulation, less exudate, edges advancing) or by a validated healing tool such as the PUSH tool, and keep the stage where it was: a Stage 4 wound that is filling in is a healing Stage 4, a closed wound is a healed injury at that stage, and a wound that reopens at the same site resumes its prior stage. When an unstageable wound is debrided to a visible base, document the date and the stage revealed, and when a deep tissue pressure injury opens, document the date and the stage revealed; neither is a downgrade or an upgrade, it is new information with a date. Set the reassessment interval your policy requires (weekly is the common convention), and before signing check that the provider's current note still names the same wound, site, and etiology, because the coder will query any conflict. Pitfall: "Stage 4, now Stage 2, improving," or a wound care note that describes a healing injury while the provider note still reads unstageable three weeks after debridement.
PRESSURE INJURY DOCUMENTATION BLOCK (one wound per block) Date / time: [ ] Setting: [ ] Rater: [ ] Trigger: [admission or transfer inspection / first identification / scheduled reassessment per policy (name it) / change in wound / debridement] Location + laterality: [site, side, body map reference] Etiology: [pressure or shear over bony prominence / under device (name it) / not a pressure injury: MASD, IAD, skin tear, arterial, venous, diabetic] Stage or category: [1 / 2 / 3 / 4 / unstageable (base hidden) / deep tissue pressure injury / mucosal, not stageable] Depth in plain words: [ ] First identified: [date, time, by whom] Prior stage assigned: [same / n/a] Present on admission: [yes / no / undetermined by provider] Admission order: [date, time] Admission skin inspection: [date, time, findings at this site] Evidence: [ED or transfer record, photograph] Measurements (cm, method stated): length [ ] width [ ] depth [ ] undermining / tunneling: [clock position, distance / none] Wound bed: [granulation __% / slough __% / eschar __% / structure visible] Exudate: [amount, type, odor] Edges: [ ] Periwound: [ ] Pain: [ ] Device or mucosal qualifier: [device named, fit, hours in place, action taken / mucosal site, not stageable / none] Photograph: [taken, date, time, ruler and identifier in frame / not taken] Consent: [written / verbal / per policy] Stored: [ ] Healing description (stage unchanged): [improving / stalled / deteriorating; what changed; PUSH or other tool result if used] Provider diagnosis on record: [note date; same wound, site, etiology, POA status / conflict: query sent date] Plan: [dressing and frequency; offloading and surface; nutrition; referral; next reassessment date; handoff, transfer summary, MDS or OASIS] Clinician signature / credentials: Date:
Free to use and share, no signup. The PDF includes a one-page cheat sheet with element-by-element pitfalls and a pre-sign checklist; the DOCX is the blank documentation block, ready to adapt. Neither reproduces the NPIAP stage definitions or illustrations.
Scenario: a US community hospital medical unit, where a wound, ostomy, and continence nurse completes the weekly reassessment of a sacral pressure injury found on the admission skin inspection of an 81-year-old woman admitted through the emergency department a week earlier; the entry states the stage once with the present-on-admission evidence, measures by a stated method, records the photograph and consent, describes healing without changing the stage, and confirms that the provider's diagnosis matches. All details are fictional.
Patient: L.B., 81 · Setting: Community hospital, medical unit; weekly wound reassessment · Clinician: P. Adeyemi, RN, CWOCN · Note date: 09/16/2026
Trigger and location: Weekly wound reassessment under the hospital's skin integrity policy (NUR-207), day 7 after admission. Single wound: sacrum, midline, centered 2 cm above the coccyx, body map reference S-1. Etiology pressure and shear: L.B. was found to have spent most of two days in a recliner at home before the emergency department visit, and the wound sits over the sacral prominence with no device involved. Perineal skin is intact with no moisture damage; this is not incontinence-associated dermatitis. No other pressure injury on today's head-to-toe inspection; bilateral heels, ischial tuberosities, trochanters, scapulae, elbows, occiput, and the oxygen tubing contact points behind both ears intact.
Stage and present-on-admission determination: Stage 3 pressure injury, first identified 09/09/2026 at 15:10 by the admitting nurse and confirmed by this writer at 09:30 on 09/10/2026: full-thickness skin loss with fat visible across the base, no muscle, tendon, or bone seen or felt with the probe, base fully visible with no covering dead tissue, so the depth could be assigned. Present on admission. The inpatient admission order was written 09/09/2026 at 14:35; the admission skin inspection at 15:10 documented this wound at this site with a photograph, and the emergency department nursing record from 09/09/2026 at 11:50 notes a sacral open area with a dressing applied at home. The stage assigned today is the stage assigned at first identification; nothing has been re-staged.
Measurements and wound description: Length 3.4 cm head to toe, width 2.3 cm perpendicular, depth 0.7 cm at the deepest point by cotton-tipped probe (09/09/2026: 3.8 by 2.6 by 0.9 cm). Undermining none today (09/09/2026: 0.6 cm from the 3 to the 5 o'clock position); no tunneling. Wound bed 85 percent red granulation, 15 percent thin yellow slough at the 6 o'clock edge, no eschar, no exposed structure (09/09/2026: 60 percent granulation, 40 percent slough). Exudate small, serous, no odor (09/09/2026: moderate, serous). Edges attached and flat, no rolling. Periwound skin intact, faint pink for about 1 cm that fades on pressure, no maceration, warmth, or induration; light skin tone. Pain 2 of 10 at rest and 4 of 10 during the dressing change by numeric rating, premedicated per order.
Photograph and consent: Photograph taken today at 09:40 with the disposable ruler and the patient label in the frame, matching the admission photograph of 09/09/2026 at 15:15 for angle and distance; written consent for wound photography signed by L.B. on 09/09/2026 and scanned to the consents tab; images stored in the wound media folder of the electronic record. The written description above stands on its own.
Healing description: Improving: surface area down about 12 percent, depth down 0.2 cm, undermining resolved, granulation up from 60 to 85 percent, exudate reduced, edges attached. PUSH tool 3.0 total 9 today against 12 on 09/09/2026 (surface area 6 to 10 square centimeters range, small exudate, granulation tissue), with attribution to the NPUAP version in the flowsheet. The stage is unchanged and will remain unchanged as the wound closes; when it closes it will be recorded as healed at the stage first assigned, never as a lower stage.
Provider documentation, plan, and reassessment: Attending's history and physical of 09/09/2026 and progress note of 09/16/2026 both document a sacral pressure injury at this stage, present on admission, with the same site and etiology; nursing and provider entries agree and no query is needed. Braden total documented separately today (13, with mobility and moisture the low subscales) and the prevention plan continues: pressure redistribution foam mattress, repositioning every two hours agreed with L.B., heels floated, chair time limited to one hour with a cushion, incontinence brief changed on schedule with barrier cream. Dressing: calcium alginate to the wound bed with a silicone foam cover, changed every three days and as needed; dietitian consult of 09/10/2026 continues with a protein supplement twice daily. Next reassessment 09/23/2026 or sooner for increased size, new dead tissue, odor, or fever. Wound description and the present-on-admission status entered in the transfer of care summary for the planned home health referral; skin integrity team informed at the 09/16/2026 meeting.
This sample is fictional and for educational purposes. It does not describe a real patient or record; the measurements, dates, and details are invented to show documentation structure and are not clinical guidance. No NPIAP stage definitions or illustrations are reproduced.
Writing these after every session? BastionGPT drafts complete notes from bullets, dictation, or a transcript.
Generate a note from bulletsUnited States: the classification is a convention, and the rules around it are law and payer policy. Under LAW, the ICD-10-CM Official Guidelines for Coding and Reporting (FY 2026, effective October 1, 2025), whose use is required of HIPAA-covered entities as part of the adopted code set, state in Section I.B.14 that the pressure ulcer stage is one of the few code assignments that may rest on documentation by clinicians other than the patient's provider, that a nurse often documents the pressure ulcer stages, that the associated diagnosis must be documented by the patient's provider, and that conflicting documentation, from the same clinician or different clinicians, calls for a query to the provider. Section I.C.12.a adds the rules coders apply to what you write: codes in category L89 identify site and stage, and as many are assigned as the patient has pressure ulcers; the unstageable code is for a wound whose stage cannot be clinically determined, for example under eschar or after a graft, and is not the code for a missing stage, which is unspecified; if the stage of an unstageable wound is revealed after debridement during the encounter, only the revealed stage is coded; a wound completely healed at admission is not coded; a healing wound is coded to its documented stage; a wound present at admission that progresses to a higher stage takes two codes, the admission stage and the highest stage reached; and pressure-induced deep tissue damage has its own codes. Appendix I defines present on admission as present at the time the order for inpatient admission occurs, counts conditions that develop in the emergency department, observation, or outpatient surgery before that order as present on admission, offers the indicators Y, N, U (documentation insufficient), and W (provider unable to clinically determine), and states that there is no required timeframe by which a provider must identify or document a condition as present on admission; any 24- or 48-hour admission window is therefore a facility convention or a quality-measure specification, not the payment definition. Under PAYER POLICY, section 5001(c) of the Deficit Reduction Act of 2005 placed stage 3 and stage 4 pressure ulcers on the Medicare hospital-acquired condition list, so that for discharges since October 1, 2008 a hospital receives no higher payment for such an ulcer coded as not present on admission, with N and U treated as not present and Y and W as present; the AHRQ Patient Safety Indicator PSI 03 (v2025) counts stage 3, stage 4, or unstageable pressure ulcers coded as secondary diagnoses not present on admission per 1,000 medical and surgical discharges of adults, excludes stays under three days, obstetric cases, severe burns, and exfoliative skin disorders, and excludes events where a deep tissue injury or unstageable ulcer was present on admission at the same site, so a documented admission finding protects the hospital's PSI 90 composite in the Hospital-Acquired Condition Reduction Program. In long-term care, 42 CFR 483.25(b)(1), surveyed as F686 (LAW), requires that a resident who enters without pressure ulcers does not develop them unless clinically unavoidable and that a resident who has them receives the care needed to promote healing and prevent new ones, and MDS 3.0 Section M (items M0210 and M0300 A through G, each with a present-at-entry column) records unhealed injuries by stage and category under RAI Manual instructions that never reverse stage, that report an unstageable wound debrided to a visible base at the stage revealed while keeping its present-at-entry status, and that treat a numerically staged wound that becomes covered by dead tissue during the stay as unstageable and not present at entry. In home health, the OASIS item set (items M1306, M1311, M1322, and M1324) reports unhealed injuries by stage at each time point, does not reverse stage, and, per CMS guidance, reports a closed injury that reopens at its worst prior stage (LAW as to collection, PAYER POLICY as to its use in payment and star ratings). CONVENTION covers the rest: weekly wound reassessment, photography under facility policy and wound society guidance, NDNQI prevalence surveys that separate hospital-acquired from community-acquired injuries, and Joint Commission expectations that risk is assessed and acted on. In litigation the record is read backward from the injury, and the Supreme Court's 2023 decision in Health and Hospital Corporation of Marion County v. Talevski, which held that residents may enforce certain Nursing Home Reform Act rights under 42 U.S.C. 1983, has raised the stakes on long-term care documentation; no published study measures how often the stage, the present-on-admission status, or the provider diagnosis is missing from audited wound records, and this page treats that gap as expert consensus rather than a statistic.
Canada and Australia use the same classification with different reporting machinery, and the evidence explains why the plain-words depth description matters everywhere. In Canada, no federal or provincial statute names the NPIAP system; hospital coders work in ICD-10-CA, which keeps ulcer-based terminology in its L89 category and carries a Canada-specific code for suspected deep pressure-induced tissue damage under CIHI coding standards (LAW as to the mandated classification, CONVENTION as to the clinical description); CIHI's hospital harm measure includes a pressure ulcer group and its long-term care indicators track worsened pressure ulcers from interRAI assessments; Accreditation Canada has carried pressure injury prevention as a Required Organizational Practice, and the current wording should be confirmed in the standards set your organization is surveyed against (CONVENTION with accreditation force); the Registered Nurses' Association of Ontario best practice guideline and Wounds Canada's recommendations carry the clinical standard. In Australia, the NSQHS Comprehensive Care Standard (second edition) requires pressure injury prevention and wound management systems consistent with best-practice guidelines, comprehensive skin inspections within best-practice time frames, and patient information and equipment (actions 5.21 to 5.23; CONVENTION with accreditation force); the ACSQHC hospital-acquired complications list includes pressure injury, specified as stage 3, stage 4, unstageable, and suspected deep tissue injury, and feeds activity-based funding adjustments (PAYER POLICY); and coders record whether a condition arose during the episode with a condition onset flag under the Australian Coding Standards rather than a US-style POA indicator (LAW as to the classification). On the evidence: in an Australian tertiary hospital, Fulbrook and Lovegrove (2023) found that of 6,186 pressure injuries validated over four years, the category had been reported correctly in 67.3 percent, with moderate agreement (kappa 0.567); Karadag, Cakar, and Demir (2024) found near-perfect agreement among three nurse academicians staging 694 photographs (kappa 0.842 to 0.937), with the most frequent disagreements between deep tissue pressure injury and Stages 1 and 2; Kottner and colleagues' 2009 systematic review of 24 interrater studies found the literature too heterogeneous to recommend any classification system, and their home care study found 96 percent agreement on classification with most disagreements at the shallowest category; Oozageer Gunowa and colleagues (2018) reviewed 11 studies and concluded that people with darker skin tones are more likely to develop higher-stage injuries, most plausibly because early damage is not recognized. Those numbers are the reason to describe depth and tissue in words the next rater can verify, to assess darker skin by tone, warmth, and firmness rather than redness, and to treat the first stage assigned as a checked finding rather than a label. On versions: the 2016 revision is the current staging system; the International Guideline of NPIAP, EPUAP, and PPPIA reached its fourth edition, released online in chapters from 2025 and presented as the current 2026 guideline, with the 2019 edition remaining the reference for material not yet reissued, so a policy should name the edition it follows.
The pressure injury stage definitions and the illustrations that accompany them are the copyrighted intellectual property of the National Pressure Injury Advisory Panel (formerly the National Pressure Ulcer Advisory Panel), revised in 2016; NPIAP's licensing page states that its materials may not be used without permission, that permission is requested through the NPIAP Product Permission Use Request Form and reviewed by the NPIAP Executive Committee, that an approved user signs a usage agreement and pays a licensing fee where applicable, that the materials may be used only after a signed contract is received, and that every use must carry the attribution "Used with permission from the National Pressure Injury Advisory Panel, copyright 20XX" together with a non-endorsement disclaimer in publications and electronic materials. The 2016 article by Edsberg and colleagues in the Journal of Wound, Ostomy and Continence Nursing is the peer-reviewed record of the revision and is available through PubMed Central, while the definitions and images themselves remain NPIAP property; the International Guideline belongs to its partner organizations NPIAP, EPUAP, and PPPIA; and the CMS coding guidelines, MDS, and OASIS instruments are US government works. Describing the depth of a wound in your own words, as this page does, is not a use of NPIAP materials, and facilities that want the definitions or illustrations in a policy, an electronic record, or a public tool should route the request through NPIAP. BastionGPT is not affiliated with, or endorsed by, any of these publishers. This page reproduces no test items, stimuli, norms, or scoring materials.
The numbers behind these errors are specific. In one Australian tertiary hospital, 6,186 validated pressure injuries over four years had been reported at the correct category only 67.3 percent of the time, with moderate agreement between reporting nurses and validators (kappa 0.567; Fulbrook and Lovegrove, 2023). Three nurse academicians staging 694 photographs reached near-perfect agreement (kappa 0.842 to 0.937) and still disagreed most often between deep tissue pressure injury and Stages 1 and 2 (Karadag, Cakar, and Demir, 2024). A systematic review of 24 interrater studies found the evidence too heterogeneous to recommend any classification system (Kottner and colleagues, 2009), and duplicate assessments in 691 home care clients agreed 96 percent of the time with most disagreements at the shallowest category. A review of 11 studies concluded that people with darker skin tones are more likely to develop higher-stage injuries, with early damage going unrecognized as the likely reason (Oozageer Gunowa and colleagues, 2018). No published audit counts how often a chart carries a nursing stage with no provider diagnosis, a present-on-admission claim with no admission inspection, or a reverse-staged wound; the coding, hospital-acquired condition, and survey rules described under compliance considerations are what turn those omissions into a payment or deficiency problem. The BastionGPT Clinical Advisory Board sees the same errors most often in pressure injury staging documentation reviews:
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Seven things, for each wound separately. The anatomic site with its side and a body map reference, and the etiology, with any look-alike (moisture damage, skin tear, arterial, venous, or diabetic ulcer) ruled out in a phrase. One stage or category, the date and time it was first identified, who staged it, and the depth in plain words a reader could check against the wound. The present-on-admission determination with its evidence: the admission order time, the admission skin inspection time and finding, and the emergency department or transfer record. Measurements by a stated method with undermining and tunneling by clock face, the wound bed by tissue percentages that add to 100, exudate, edges, periwound skin, and pain. The device or mucosal qualifier where one applies. The photograph with its date, consent, and storage, beside a written description. And a healing description that uses the wound's characteristics or a validated tool while the stage stays where it was, followed by a check that the provider's note still names the same wound, site, and etiology. The blank template on this page carries those fields; the sample shows them filled in.
A nurse can stage, and the provider must diagnose. Section I.B.14 of the ICD-10-CM Official Guidelines lists the pressure ulcer stage among the few code assignments that may rest on documentation by clinicians other than the patient's provider, observes that a nurse often documents the pressure ulcer stages, and then requires that the associated diagnosis be documented by the patient's provider; if the documentation conflicts, from the same clinician or different clinicians, the provider is queried. So a complete record needs both entries for the same wound, site, and etiology, and a wound with a nursing stage but no provider diagnosis cannot be coded at all. The word ulcer survives because the coding system did not follow the 2016 NPIAP change: category L89 identifies site and stage with stages 1 to 4, deep tissue pressure injury, unspecified stage, and unstageable, and the MDS and OASIS item names likewise keep ulcer or ulcer/injury. Write pressure injury in your clinical entry if your facility has adopted the NPIAP term, expect the coder to translate it, and never treat a provider's pressure ulcer and your pressure injury as a conflict; the conflict that matters is a different site, a different stage, or a different etiology.
Present on admission means present at the time the order for inpatient admission occurs; that is the definition in Appendix I of the ICD-10-CM Official Guidelines, and it counts conditions that develop in the emergency department, in observation, or in outpatient surgery before the order as present on admission. There is no 24- or 48-hour window in the definition, and the guidelines state that there is no required timeframe by which a provider must identify or document a condition as present on admission, because some conditions take days to recognize. A hospital rule that an injury found within a set number of hours is presumed present is a local convention, and quality measures may use their own time-based specifications; neither is the payment definition. The stakes are the Medicare hospital-acquired condition policy, under which stage 3 and stage 4 pressure ulcers coded as not present on admission (indicators N or U) earn no higher payment, and AHRQ's PSI 03, which counts stage 3, 4, or unstageable ulcers not present on admission. The evidence that carries the determination is the admission skin inspection with its time, the emergency department or transfer record, and a dated photograph; when the inspection was late or silent about the site, document the earliest reliable finding and the reason, and leave the provider to record Y, N, U, or W.
Stage 4, described as healing. The stage records the deepest damage the wound reached, and a healing wound fills its defect with granulation and scar tissue rather than regrowing the muscle, fat, or dermis it lost, so a shallower-looking wound is not a shallower injury. The NPUAP said so in its 2000 position statement (in its words, "once a Stage IV always a Stage IV"), the RAI Manual for MDS 3.0 and the OASIS guidance forbid reverse staging, and the ICD-10-CM guidelines code a healing wound to its documented stage. Chart progress by what changed: length, width, and depth by the same method, undermining and tunneling, tissue percentages, exudate, edges, and pain, or a validated healing tool such as the PUSH tool, whose three parameters (surface area, exudate amount, tissue type) were built to replace reverse staging. When the wound closes, record it as healed at the stage it reached; if it reopens at the same site, it resumes that stage. If your electronic record forces a stage field at every entry, enter the original stage and use the free text for the healing description.
As new information with a date, never as a downgrade or an upgrade. An unstageable wound is a full-thickness wound whose base is hidden, so when debridement exposes the base you document the date, what was revealed, and the stage now assignable, keeping the original finding and its date in the record; the ICD-10-CM guidelines then assign only the code for the stage revealed after debridement, and the RAI Manual keeps the wound's present-at-entry status at the stage revealed if it was present when the resident entered. A deep tissue pressure injury is damage that has not yet declared itself: chart the discoloration or blood-filled blister at first identification, reassess on schedule, and if the skin opens to expose the base, document the date and the stage revealed while the present-on-admission status stays as it was set at first identification. Two coding details to know without doing the coder's job: a deep tissue pressure injury has its own code family, and a wound that was present at admission and progressed to a higher stage during the stay takes two codes, the admission stage and the highest stage reached. Write the history in dated lines so both readings are possible from your entry.
A blister filled with clear fluid over a pressure point, intact or broken, is documented at Stage 2; a blood-filled blister signals a deep tissue pressure injury and is documented as one. Moisture-associated skin damage, including incontinence-associated dermatitis, is a moisture injury, is not a pressure injury, and is never staged; describe it, name the cause, and treat the cause, and when a wound has both moisture and pressure components say which one you are staging and why. A skin tear is mechanical trauma with its own classification, and arterial, venous, and diabetic foot ulcers have their own systems and codes; a heel ulcer in a patient with diabetes is a pressure injury only if the history and location say so. A medical device related pressure injury is staged by depth like any other, with the device named, its fit and hours in place recorded, and the action taken; that qualifier is what tells a reviewer the gap was the device bundle rather than the mattress. A pressure injury on mucous membrane (nasal septum, lip, tongue, urethra, and similar sites, almost always from a device) is documented as a pressure injury, described in words and measurements, and given no numeric stage, because mucosa has none of the skin layers the stages describe; MDS and OASIS do not stage it either.
No national rule requires one; photography follows your facility's policy and wound society guidance, and where it is done it is a health record entry. A wound photograph is protected health information, so it needs the consent your policy and state law require (written consent is the common convention, some organizations rely on a specific clause in the admission consent, and a patient may decline), and it belongs in the record, not on a personal phone. Chart that the photograph was taken, the date and time, that a ruler and patient identifier were in the frame, the consent obtained, and where the image is stored, and write the description in words in the same entry, because photographs flatten depth and shift color and a reviewer needs the measurements and tissue percentages beside the image. The one photograph that earns its place every time is the admission inspection photograph of any wound present, dated and labeled, because it is the clearest possible evidence for a present-on-admission determination and it anchors every later comparison.
Only with NPIAP's permission. The stage definitions and illustrations are the intellectual property of the National Pressure Injury Advisory Panel, and its licensing page states that NPIAP materials may not be used without permission: you complete the NPIAP Product Permission Use Request Form, the request is reviewed by the NPIAP Executive Committee, an approved user signs a usage agreement and pays a licensing fee where applicable, and the materials may be used only after a signed contract is received, with the attribution "Used with permission from the National Pressure Injury Advisory Panel, copyright 20XX" and, for publications and electronic materials, NPIAP's non-endorsement disclaimer. That applies to a policy document, an electronic record build, a pocket card, and a public web page alike, and being free, educational, or non-commercial does not create a license. What needs no permission is a description in your own words of what each stage looks like in terms of depth and tissue, a numeric stage field, and the documentation structure on this page; NPIAP's peer-reviewed 2016 article by Edsberg and colleagues can be cited as the source of the system. Wound photographs of your own patients are your records, subject to consent, not NPIAP's.
Yes. Give it the facts (the site and side, the etiology and any look-alike ruled out, the depth you saw in plain words, the date and time first identified and by whom, the admission order and inspection times with the emergency department or transfer record, the measurements and method, the wound bed percentages, exudate, edges, periwound, and pain, any device or mucosal detail, the photograph and consent, the baseline values, and the provider's current diagnosis) and it drafts the full entry: location and etiology, one stage or category with its date, the present-on-admission determination with its evidence, the wound description, the qualifiers, the photograph line, the healing description with the stage unchanged, and the provider match and plan, ready for your review. It can also check a finished entry for a stage that moved down, a nursing stage with no provider diagnosis, a present-on-admission claim with no admission inspection behind it, a moisture lesion staged as pressure, a numeric stage on mucosa, an unnamed device, percentages that do not add to 100, or a photograph with no date, consent, or description. BastionGPT is HIPAA-compliant with a signed BAA on every plan, and your data is never used to train models.
The instrument facts and compliance claims on this page trace to these sources, last verified September 2026:
Educational content, not legal or billing advice. Sample notes are fictional. Follow your organization's policies and your board, payer, and jurisdiction requirements.