ICD-10 Code L97.312 – Non-pressure chronic ulcer of right ankle with fat layer exposed (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L97.312 – Non-pressure chronic ulcer of right ankle with fat layer exposed
What it is
This code identifies a chronic, non-pressure ulcer located on the right ankle with exposed subcutaneous tissue. It describes a full-thickness skin loss that is not caused by pressure injury.
Clinical signs
Expect a persistent open wound at the right ankle with visible fat layer, often with surrounding skin breakdown. Clinical features vary; refer to documentation for laterality, depth, and chronicity.
When to use this code
Use L97.312 when the record clearly documents a chronic ulcer of the right ankle and specifies exposure of the fat layer. You should confirm that the ulcer is non-pressure and not limited to superficial skin loss. If the provider documents a different depth or site, code that exact description instead.
Do not use for
Do not use this code for pressure ulcers, acute wounds, or ulcers without documented fat layer exposure. Check documentation if the laterality or anatomic site is unclear.
Coding tip
Verify both the ulcer depth and the right ankle location before assigning L97.312.