ICD-10 Code L98.A124 – Non-pressure chronic ulcer of left upper arm with necrosis of bone (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L98.A124 – Non-pressure chronic ulcer of left upper arm with necrosis of bone
What it is
This code identifies a chronic, non-pressure ulcer on the left upper arm with documented necrosis of bone. It is used when the wound is not caused by pressure injury and bone death is specifically recorded.
Clinical signs
Look for a persistent open ulcer on the left upper arm with exposed or necrotic bone noted in the record. Clinical features vary; refer to documentation for depth, chronicity, and any associated tissue loss.
When to use this code
Use this code when the provider documents a chronic ulcer of the left upper arm and states that necrosis of bone is present. It fits wound assessments, specialist notes, or operative reports that clearly describe bone involvement. If laterality, location, or bone necrosis is unclear, check documentation before coding.
Do not use for
Do not use it for pressure ulcers, acute wounds, or ulcers without documented bone necrosis. Avoid it when the site is not the left upper arm or when the chart only says “ulcer” without further detail.
Coding tip
Confirm both the anatomic site and the phrase “necrosis of bone” in the provider record before assigning L98.A124.