ICD-10 Code L98.492 – Non-pressure chronic ulcer of skin of other sites with fat layer exposed (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L98.492 – Non-pressure chronic ulcer of skin of other sites with fat layer exposed
What it is
This code identifies a chronic skin ulcer at a site other than the foot or pressure areas, with exposed subcutaneous fat. It is used when the ulcer is non-pressure in origin and the depth is documented.
Clinical signs
Typical findings include an open, nonhealing skin defect with visible fat in the wound base. Clinical features vary; refer to documentation for location, chronicity, and depth.
When to use this code
Use L98.492 when the record clearly states a chronic ulcer of skin at another site and documents fat layer exposure. Apply it for wounds that are not pressure injuries and not limited to superficial skin loss. If the site or depth is unclear, check documentation before assigning the code.
Do not use for
Do not use this code for pressure ulcers, diabetic foot ulcers, or ulcers without documented fat layer exposure. Check documentation if the wound is acute, surgical, or better described by another diagnosis.
Coding tip
Confirm both the non-pressure cause and the exposed fat layer in the provider note before coding.