ICD-10 Code L89.311 – Pressure ulcer of right buttock, stage 1 (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L89.311 – Pressure ulcer of right buttock, stage 1
What it is
This code identifies a pressure ulcer on the right buttock limited to stage 1. Stage 1 means intact skin with localized redness that does not blanch when pressed.
Clinical signs
You may see persistent nonblanchable erythema over the right buttock, with skin still intact. Clinical features vary; refer to documentation if color change, tenderness, warmth, or firmness is not clearly described.
When to use this code
Use this code when the provider documents a pressure injury on the right buttock and specifically states stage 1. It is appropriate when the ulcer is present on intact skin and the site is clearly right-sided. If laterality or stage is unclear, check documentation before coding.
Do not use for
Do not use this code for a stage 2, 3, 4, unstageable, or deep tissue pressure injury. Do not assign it if the documentation describes a different site or only redness from another cause.
Coding tip
Confirm both laterality and stage in the note; if either element is missing, you should query or review supporting documentation.