ICD-10 Code L97.422 – Non-pressure chronic ulcer of left heel and midfoot with fat layer exposed (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L97.422 – Non-pressure chronic ulcer of left heel and midfoot with fat layer exposed
What it is
This code identifies a chronic, non-pressure ulcer on the left heel or midfoot with exposed subcutaneous fat. It describes a full-thickness skin loss that is not caused by pressure injury.
Clinical signs
You may see an open wound on the left heel or midfoot with visible fat tissue in the base. Clinical features vary; refer to documentation for chronicity, laterality, and depth.
When to use this code
Use this code when the provider documents a chronic ulcer on the left heel or midfoot and specifies that fat layer is exposed. It fits non-pressure ulcers from causes such as vascular disease, diabetes, or other documented conditions. Confirm the site and depth in the record.
Do not use for
Do not use this code for pressure ulcers or for ulcers without documented fat layer exposure. Check documentation if the wound site is not the left heel or midfoot.
Coding tip
Verify laterality, exact location, and ulcer depth before assigning L97.422.