ICD-10 Code L97.306 – Non-pressure chronic ulcer of unspecified ankle with bone involvement without evidence of necrosis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L97.306 – Non-pressure chronic ulcer of unspecified ankle with bone involvement without evidence of necrosis
What it is
This code identifies a chronic, non-pressure ulcer at the ankle with bone involvement and no documented necrosis. Use it when the record specifies the ankle site but does not identify right or left.
Clinical signs
Typical findings include a persistent open ulcer at the ankle with exposed or involved bone. Clinical features vary; refer to documentation for laterality, depth, and any signs of infection or tissue loss.
When to use this code
Use this code when the provider documents a chronic ankle ulcer involving bone and explicitly states no necrosis. It also fits when the ulcer is non-pressure and the laterality is unspecified in the note. If the record names a right or left ankle, choose the more specific code.
Do not use for
Do not use this code for pressure ulcers, acute wounds, or ulcers without bone involvement. Check documentation if necrosis is present or if the ankle side is documented.
Coding tip
Verify that the chart supports both “bone involvement” and “without necrosis” before assigning L97.306.