OASIS · Section M
M1311 — Current Number of Unhealed Pressure Ulcers/Injuries at Each Stage
Response options, how to score it, and the error that most often sends the record back. Cited to Ch. 3, Item M1311.
How to score it
Report the current count of unhealed pressure injuries at each NPIAP stage (Stage 1 through 4, unstageable, and deep tissue injury). Count only pressure injuries — not other wound types. Do not 'back-stage' a healing pressure injury. See Guidance Manual Ch. 3 item-by-item tips for the full staging rubric.
The common error
Back-staging a healing Stage 3 or Stage 4 wound to Stage 2 or Stage 1. Once a pressure injury reaches Stage 3 or 4, it remains at that classification even as it heals — report it as a healing Stage 3/4, not a lower stage.
CMS Q&As on this item
- Q98.4.2.1 Is a pressure ulcer automatically a Stage 4 if osteomyelitis is present, despite what type of breakdown there…
- Q98.4.3.1 Upon admission, our patient had two distinct pressure ulcers (one Stage 2 and one Stage 3) in close…
- Q98.4.3.2 Our patient has a Stage 3 pressure ulcer that we have been treating during the episode. At the reassessment…
- Q98.4.3.3 We had a patient that was admitted with bilateral heel Deep Tissue Injuries (DTIs) coded at SOC as two…
- Q98.4.3.4 I am looking for clarification in regard to coding of a wound. A patient is admitted with a Deep Tissue…
- Q98.4.3.5 Please provide guidance on how to stage a pressure ulcer on the OASIS when the deepest anatomic soft tissue…
- Q12 With the expanded one clinician convention, would it be appropriate if a second clinician performs a remote…
- Q7 A pressure ulcer that was present at SOC healed during the quality episode. Prior to the end of the quality…
Source: OASIS-E2 Guidance Manual — Ch. 3, Item M1311. Verified 2026-04-26.
Nearby Section M items
- M1306Unhealed Pressure Ulcer/Injury at Stage 2 or Higher
- M1322Current Number of Stage 1 Pressure Injuries
- M1324Stage of Most Problematic Unhealed Pressure Ulcer/Injury that is Stageable
- M1330Does This Patient Have a Stasis Ulcer?
- M1340Does This Patient Have a Surgical Wound?
- M1342Status of Most Problematic Surgical Wound that is Observable
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