ICD-10 Code L98.A392 – Non-pressure chronic ulcer of unspecified hand with fat layer exposed (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L98.A392 – Non-pressure chronic ulcer of unspecified hand with fat layer exposed
What it is
This code identifies a chronic, non-pressure ulcer on an unspecified hand where the wound extends into the fat layer. Use it when documentation confirms both the hand location and exposed subcutaneous tissue.
Clinical signs
Typical findings include an open, persistent wound on the hand with visible fat layer, delayed healing, and local tissue breakdown. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents a chronic ulcer of the hand and specifies fat layer exposure, but does not identify a more precise hand site. It is appropriate for non-pressure ulcers, not acute traumatic wounds. Check documentation if the record mentions infection, necrosis, or a different ulcer depth.
Do not use for
Do not use this code for pressure ulcers, traumatic open wounds, or ulcers without fat layer exposure. If the site is more specific than “unspecified hand,” code to the documented location instead.
Coding tip
Verify the ulcer type, depth, and exact hand location in the note before assigning L98.A392.