ICD-10 Code L97.324 – Non-pressure chronic ulcer of left ankle with necrosis of bone (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L97.324 – Non-pressure chronic ulcer of left ankle with necrosis of bone
What it is
This code identifies a chronic, non-pressure ulcer on the left ankle that extends to and involves bone necrosis. Use it when documentation specifies both the left ankle site and bone death.
Clinical signs
Findings may include a persistent open wound at the left ankle, exposed or affected bone, and delayed healing. Clinical features vary; refer to documentation for necrosis, depth, and laterality.
When to use this code
Use L97.324 when the provider documents a chronic ulcer of the left ankle with necrosis of bone. It applies to non-pressure ulcers, not pressure injuries, and requires the ankle site and bone involvement to be clear. Check documentation if the record does not specify laterality or depth.
Do not use for
Do not use this code for pressure ulcers, ulcers at other foot or leg sites, or wounds without documented bone necrosis. If the ulcer is not chronic or the site is uncertain, check documentation.
Coding tip
Confirm laterality, ulcer site, and the phrase “with necrosis of bone” before assigning L97.324.