ICD-10 Code L97.413 – Non-pressure chronic ulcer of right heel and midfoot with necrosis of muscle (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L97.413 – Non-pressure chronic ulcer of right heel and midfoot with necrosis of muscle
What it is
This code identifies a chronic, non-pressure ulcer on the right heel or midfoot with muscle necrosis. It is used when the wound is not caused by pressure injury and extends to dead muscle tissue.
Clinical signs
Typical findings include an open ulcer on the right heel or midfoot with documented muscle involvement or necrosis. Clinical features vary; refer to documentation for depth, laterality, and whether the ulcer is chronic and non-pressure related.
When to use this code
Use this code when the record clearly states a chronic ulcer on the right heel or midfoot and specifies necrosis of muscle. You should also confirm that the ulcer is non-pressure in origin. If the note does not identify muscle necrosis or laterality, check documentation.
Do not use for
Do not use this code for pressure ulcers, ulcers at other sites, or ulcers without muscle necrosis. If the documentation only says “ulcer” or “wound” without further detail, do not assume L97.413.
Coding tip
Verify both location and tissue depth in the provider note before assigning L97.413.