ICD-10 Code L98.414 – Non-pressure chronic ulcer of buttock with necrosis of bone (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L98.414 – Non-pressure chronic ulcer of buttock with necrosis of bone
What it is
This code identifies a chronic, non-pressure ulcer on the buttock with bone necrosis. Use it when documentation shows a full-thickness skin breakdown in this location and the underlying bone is dead or necrotic.
Clinical signs
Expect a persistent buttock wound with tissue loss and exposed or affected deeper structures. Documentation may note necrotic bone, chronic drainage, odor, or delayed healing; clinical features vary, refer to documentation.
When to use this code
Use L98.414 when the provider clearly documents a non-pressure chronic ulcer of the buttock and specifies necrosis of bone. It is appropriate for chronic wounds that are not caused by pressure injury and are not better described by another ulcer code. Check documentation if the site, cause, or depth is unclear.
Do not use for
Do not use this code for pressure ulcers, acute wounds, or ulcers at other anatomic sites. If bone necrosis is not documented, or the ulcer is described differently, choose the more accurate code.
Coding tip
Confirm both the location and the “necrosis of bone” detail in the record before assigning L98.414.