ICD-10 Code L98.A125 – Non-pressure chronic ulcer of left upper arm with muscle involvement without evidence of necrosis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L98.A125 – Non-pressure chronic ulcer of left upper arm with muscle involvement without evidence of necrosis
What it is
This code describes a chronic, non-pressure ulcer on the left upper arm that extends into muscle but does not show necrosis. Use it when the record clearly identifies the site, depth, and absence of dead tissue.
Clinical signs
Typical findings include a persistent open skin lesion with exposed or involved deeper tissue at the left upper arm. Clinical features vary; refer to documentation for evidence of muscle involvement and no necrotic tissue.
When to use this code
Use this code when the provider documents a chronic ulcer of the left upper arm and specifies muscle involvement without necrosis. It is appropriate when laterality and depth are confirmed in the note or wound assessment. Check documentation if the ulcer is described only as superficial or if the tissue depth is unclear.
Do not use for
Do not use it for pressure ulcers, ulcers without muscle involvement, or wounds with necrosis. If the site is not the left upper arm, or the record is nonspecific, check documentation.
Coding tip
Match the exact anatomic site and depth wording in the provider record before assigning L98.A125.