ICD-10 Code L98.415 – Non-pressure chronic ulcer of buttock with muscle involvement without evidence of necrosis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L98.415 – Non-pressure chronic ulcer of buttock with muscle involvement without evidence of necrosis
What it is
This code identifies a chronic, non-pressure ulcer on the buttock that extends into muscle but shows no necrosis. Use it when documentation clearly states muscle involvement without dead tissue.
Clinical signs
Findings typically include a persistent buttock wound with full-thickness tissue loss reaching muscle. Clinical features vary; refer to documentation for depth, drainage, and whether necrosis is absent.
When to use this code
Use L98.415 when the provider documents a chronic ulcer of the buttock with muscle involvement and specifically notes no necrosis. It is appropriate for non-pressure ulcers, not pressure injuries. Check documentation for laterality, cause, and any associated infection if reported.
Do not use for
Do not use this code for pressure ulcers or for ulcers limited to skin or subcutaneous tissue. Also avoid it if necrosis is present or if the record does not confirm muscle involvement.
Coding tip
Match the ulcer depth exactly to the provider’s wording; if muscle involvement is not stated, do not assume it.