ICD-10 Code L97.9 – Non-pressure chronic ulcer of unspecified part of lower leg (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L97.9 – Non-pressure chronic ulcer of unspecified part of lower leg
What it is
This code identifies a chronic, non-pressure ulcer on the lower leg when the exact site is not documented. It applies to a persistent open sore that is not caused by pressure injury.
Clinical signs
Typical findings include an open wound with delayed healing, surrounding skin changes, and possible drainage or pain. Clinical features vary; refer to documentation.
When to use this code
Use L97.9 when the provider documents a chronic ulcer of the lower leg but does not specify whether it is on the calf, shin, or another exact location. It is appropriate when the ulcer is non-pressure and the record supports chronicity. Check documentation if laterality or depth is unclear.
Do not use for
Do not use this code for pressure ulcers, acute wounds, or ulcers with a more specific lower-leg location documented. If the cause or site is better defined, choose the more specific code.
Coding tip
Query for the exact lower-leg site and ulcer type when the note is vague, because unspecified coding should be a last resort.