Non-prs chronic ulcer of unsp up arm with necrosis of bone

This code signifies a persistent, non-pressure-related open sore located on an unspecified area of the upper arm, characterized by the presence of dead bone tissue. This indicates a severe, deep ulceration that has progressed beyond soft tissue involvement.

Apply this code when documentation clearly states a chronic, non-pressure ulcer on the upper arm with confirmed necrosis of bone. This typically occurs in patients with underlying conditions like peripheral vascular disease, diabetes, or autoimmune disorders. Documentation should specify the chronicity and the involvement of bone.

• Ensure the documentation explicitly states "non-pressure" and "necrosis of bone" for the upper arm.
• Do not use this code for pressure ulcers; refer to the L89 series for those.
• Always sequence this code after any underlying systemic condition contributing to the ulcer, such as diabetes mellitus with complications.