ICD-10 Code L97.103 – Non-pressure chronic ulcer of unspecified thigh with necrosis of muscle (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L97.103 – Non-pressure chronic ulcer of unspecified thigh with necrosis of muscle
What it is
This code identifies a chronic, non-pressure ulcer on the thigh when the site is not further specified and the wound extends to necrosis of muscle. It indicates a serious tissue-loss condition, not a pressure injury.
Clinical signs
Look for a persistent open wound on the thigh with visible tissue destruction and documented muscle necrosis. Clinical features vary; refer to documentation for depth, drainage, infection, or surrounding skin changes.
When to use this code
Use L97.103 when the record clearly states a non-pressure chronic ulcer of the thigh and the provider documents necrosis of muscle. Choose it when the thigh site is unspecified and no more specific laterality or location is given. Check documentation if the ulcer depth is unclear.
Do not use for
Do not use this code for pressure ulcers, acute wounds, or ulcers at another anatomic site. Avoid it if the documentation does not confirm muscle necrosis or if a more specific thigh code is available.
Coding tip
Verify both the non-pressure nature and the exact ulcer depth before assigning this code.