ICD-10 Code L98.A324 – Non-pressure chronic ulcer of left hand with necrosis of bone (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L98.A324 – Non-pressure chronic ulcer of left hand with necrosis of bone
What it is
This code identifies a chronic, non-pressure ulcer on the left hand with bone necrosis. Use it when documentation shows a persistent open lesion not caused by pressure, and the bone beneath is dead or devitalized.
Clinical signs
Typical findings include a long-standing ulcer with exposed or affected bone, delayed healing, and local tissue breakdown. Clinical features vary; refer to documentation for laterality, chronicity, and confirmation of necrosis.
When to use this code
Use this code when the record specifically states a non-pressure chronic ulcer of the left hand and documents necrosis of bone. It is appropriate when the ulcer is chronic and the provider links the bone necrosis to that ulcer. Check documentation if the site, laterality, or depth is unclear.
Do not use for
Do not use this code for pressure ulcers, acute wounds, or ulcers without documented bone necrosis. If the ulcer is on a different hand or body site, select the code that matches the documented location.
Coding tip
Verify both laterality and the presence of bone necrosis in the provider note before assigning L98.A324.