ICD-10 Code L98.A391 – Non-pressure chronic ulcer of unspecified hand limited to breakdown of skin (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L98.A391 – Non-pressure chronic ulcer of unspecified hand limited to breakdown of skin
What it is
This code identifies a chronic, non-pressure ulcer on an unspecified hand that is limited to skin breakdown. Use it when the documentation shows a superficial ulcer without deeper tissue involvement.
Clinical signs
Findings usually include a persistent open skin lesion on the hand with loss of the epidermis and superficial dermis. 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 specifically states it is limited to breakdown of skin. It applies when the hand site is not further specified and there is no evidence of fat, muscle, or bone involvement. If laterality or depth is unclear, check documentation.
Do not use for
Do not use this code for pressure ulcers, acute wounds, or ulcers that extend beyond skin breakdown. It is also incorrect if the record identifies a more specific hand site or deeper tissue loss.
Coding tip
Confirm both chronicity and depth in the note before assigning L98.A391.