ICD-10 Code L98.A394 – Non-pressure chronic ulcer of unspecified hand with necrosis of bone (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L98.A394 – Non-pressure chronic ulcer of unspecified hand with necrosis of bone
What it is
This code identifies a chronic, non-pressure ulcer on an unspecified hand that has extended deeply enough to involve bone necrosis. Use it when the documentation clearly states both the ulcer location and necrosis of bone.
Clinical signs
Typical findings include a persistent open wound on the hand with exposed or affected bone, delayed healing, and signs of tissue breakdown. Clinical features vary; refer to documentation.
When to use this code
Use this code when the record describes a chronic hand ulcer and specifically documents necrosis of bone, but does not specify right or left hand. It is appropriate for non-pressure ulcers only. If the note lacks laterality or bone involvement, check documentation before coding.
Do not use for
Do not use this code for pressure ulcers, acute wounds, or ulcers of a specified hand when a more specific code is documented. Do not assume bone necrosis without explicit provider documentation.
Coding tip
Confirm both “non-pressure chronic ulcer” and “necrosis of bone” are stated in the chart before assigning L98.A394.