ICD-10 Code L97.123 – Non-pressure chronic ulcer of left thigh with necrosis of muscle (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L97.123 – Non-pressure chronic ulcer of left thigh with necrosis of muscle
What it is
This code identifies a chronic, non-pressure ulcer on the left thigh that extends into and destroys muscle tissue. Use it when the record clearly documents the left thigh site and muscle necrosis.
Clinical signs
Typical findings include a persistent open wound with tissue loss, delayed healing, and exposed or involved deeper structures. Clinical features vary; refer to documentation for confirmation of necrosis of muscle.
When to use this code
Use L97.123 when the provider documents a chronic ulcer of the left thigh and specifies necrosis of muscle. The note should support a non-pressure cause, not a pressure injury or an acute wound. If laterality or depth is unclear, check documentation before assigning the code.
Do not use for
Do not use this code for pressure ulcers, acute traumatic wounds, or ulcers on another body site. Also avoid it if muscle necrosis is not documented or cannot be confirmed from the record.
Coding tip
Verify both laterality and ulcer depth in the provider’s note before coding.