ICD-10 Code L97.901 – Non-pressure chronic ulcer of unspecified part of unspecified lower leg limited to breakdown of skin (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L97.901 – Non-pressure chronic ulcer of unspecified part of unspecified lower leg limited to breakdown of skin
What it is
This code identifies a chronic ulcer on an unspecified lower leg that is not caused by pressure and is limited to skin breakdown. Use it when the record does not specify the exact lower-leg site or deeper tissue involvement.
Clinical signs
Typical findings include a persistent open sore with loss of the skin surface and no evidence of deeper tissue exposure. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents a chronic non-pressure ulcer of the lower leg, but the exact side or location is not stated. It also fits when the ulcer is described as limited to breakdown of skin and no deeper layer is documented. Check documentation if the note suggests muscle, fat, or bone involvement.
Do not use for
Do not use this code for pressure ulcers, acute wounds, or ulcers with documented deeper tissue loss. If the ulcer site is specified more precisely or the depth is greater, choose the more accurate code.
Coding tip
Verify both the ulcer depth and the exact lower-leg location before assigning L97.901.