ICD-10 Code L97.121 – Non-pressure chronic ulcer of left thigh limited to breakdown of skin (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L97.121 – Non-pressure chronic ulcer of left thigh limited to breakdown of skin
What it is
This code identifies a chronic, non-pressure ulcer on the left thigh where skin loss is limited to the epidermis and dermis. Use it when the ulcer is not caused by pressure and does not extend beyond breakdown of skin.
Clinical signs
Typical findings include a persistent open sore on the left thigh with superficial tissue loss, drainage, or surrounding skin irritation. Clinical features vary; refer to documentation for depth, laterality, and whether the ulcer is non-pressure.
When to use this code
Use L97.121 when the record clearly documents a chronic ulcer on the left thigh and specifies limited breakdown of skin. The provider should also indicate that it is non-pressure in origin. If the site, laterality, or depth is unclear, check documentation before coding.
Do not use for
Do not use this code for pressure ulcers, deeper ulcers involving fat or muscle, or ulcers on another body site. If the note does not support chronicity or laterality, check documentation.
Coding tip
Confirm both laterality and ulcer depth in the record before assigning this code.