ICD-10 Code L97.813 – Non-pressure chronic ulcer of other part of right lower leg with necrosis of muscle (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L97.813 – Non-pressure chronic ulcer of other part of right lower leg with necrosis of muscle
What it is
This code identifies a chronic, non-pressure ulcer on another part of the right lower leg with muscle necrosis. Use it when documentation shows a persistent open wound not caused by pressure and extending to muscle tissue.
Clinical signs
Typical findings include a nonhealing ulcer on the right lower leg with exposed or necrotic muscle tissue. Clinical features vary; refer to documentation for depth, location, and whether infection or other complications are present.
When to use this code
Use L97.813 when the provider documents a chronic ulcer on the right lower leg, at a site other than the ankle or heel, and specifies necrosis of muscle. The record should support that the ulcer is non-pressure and chronic. If the location or tissue depth is unclear, check documentation before coding.
Do not use for
Do not use this code for pressure ulcers, acute wounds, or ulcers without muscle necrosis. It is also wrong when the site is the ankle, heel, or foot, or when the right-sided location is not documented.
Coding tip
Confirm the exact anatomic site and tissue depth in the note; L97.813 is only appropriate when both right lower leg and muscle necrosis are explicitly documented.