ICD-10 Code L97.21 – Non-pressure chronic ulcer of right calf (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L97.21 – Non-pressure chronic ulcer of right calf
What it is
This code identifies a chronic ulcer on the right calf that is not caused by pressure. Use it when the documentation clearly states the ulcer location as the right calf.
Clinical signs
Typical findings include a persistent open sore with delayed healing, localized tissue loss, and possible drainage or surrounding skin changes. Clinical features vary; refer to documentation.
When to use this code
Use L97.21 when the record documents a non-pressure chronic ulcer specifically on the right calf. It may appear in wound care, vascular, or diabetes-related encounters, but the ulcer location and chronic nature must be documented. Check documentation if the site is described more generally.
Do not use for
Do not use this code for pressure ulcers, acute wounds, or ulcers on another leg location. If the documentation does not specify the right calf, check documentation.
Coding tip
Confirm both the non-pressure cause and the exact right-calf location before assigning L97.21.