ICD-10 Code L97.423 – Non-pressure chronic ulcer of left heel and midfoot with necrosis of muscle (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L97.423 – Non-pressure chronic ulcer of left heel and midfoot with necrosis of muscle
What it is
This code identifies a chronic, non-pressure ulcer on the left heel or midfoot with muscle necrosis. Use it when the wound is not caused by pressure injury and documentation confirms damage extends to muscle.
Clinical signs
Typical findings include an open ulcer in the left heel or midfoot with exposed or necrotic muscle tissue. Clinical features vary; refer to documentation for depth, laterality, and whether the wound is non-pressure related.
When to use this code
Use L97.423 when the record clearly states a chronic ulcer of the left heel or midfoot and specifies necrosis of muscle. This code fits wound assessments, specialist notes, or discharge summaries that document non-pressure etiology and tissue involvement. Check documentation if laterality or depth is unclear.
Do not use for
Do not use this code for pressure ulcers, ulcers of other foot locations, or wounds without documented muscle necrosis. If the chart does not confirm a non-pressure chronic ulcer, check documentation.
Coding tip
Verify both the anatomic site and the deepest documented tissue level before assigning L97.423.