ICD-10 Code L97.405 – Non-pressure chronic ulcer of unspecified heel and midfoot with muscle involvement without evidence of necrosis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L97.405 – Non-pressure chronic ulcer of unspecified heel and midfoot with muscle involvement without evidence of necrosis
What it is
This code identifies a chronic, non-pressure ulcer on the heel or midfoot when the wound extends into muscle but there is no necrosis. Use it when the site is not otherwise specified as right or left.
Clinical signs
Clinical features vary; refer to documentation. The record should describe a chronic open ulcer at the heel or midfoot with muscle involvement and no evidence of dead tissue, pressure injury, or gangrene.
When to use this code
Use L97.405 when the provider documents a non-pressure chronic ulcer of the unspecified heel or midfoot with muscle involvement and no necrosis. It fits wounds described as deep, chronic, and non-pressure related when laterality is not stated. Check documentation if the chart does not clearly identify the anatomic site or depth.
Do not use for
Do not use this code for pressure ulcers, ulcers with necrosis, or ulcers limited to skin or fat. If the laterality is documented as right or left, select the more specific code.
Coding tip
Verify both the wound depth and the absence of necrosis before assigning this code.