ICD-10 Code L97.323 – Non-pressure chronic ulcer of left ankle with necrosis of muscle (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L97.323 – Non-pressure chronic ulcer of left ankle with necrosis of muscle
What it is
This code identifies a chronic, non-pressure ulcer on the left ankle that extends to muscle necrosis. Use it when documentation shows a full-thickness ulcer at that site with muscle tissue involvement.
Clinical signs
Typical findings include an open wound on the left ankle that does not heal normally and evidence of tissue loss reaching muscle. Clinical features vary; refer to documentation.
When to use this code
Use L97.323 when the provider documents a chronic ulcer of the left ankle and specifically states necrosis of muscle. You should confirm the ulcer is non-pressure and located on the left ankle, not another foot or leg site. If the depth or laterality is unclear, check documentation.
Do not use for
Do not use this code for pressure ulcers, acute wounds, or ulcers at a different location. If muscle necrosis is not documented, choose the code that matches the recorded depth.
Coding tip
Verify both laterality and ulcer depth in the note before assigning L97.323.