Non-prs chronic ulcer of l up arm with fat layer exposed

This code signifies a persistent, non-pressure-related open sore on the patient's left upper arm where the ulceration has progressed through the dermis and subcutaneous tissue, exposing the underlying adipose (fat) layer. It indicates a chronic wound that is not due to sustained pressure.

Apply this code when documentation specifies a chronic, non-pressure ulcer located on the left upper arm with a documented depth reaching the fat layer. This typically applies to wounds resulting from conditions such as venous insufficiency, arterial insufficiency, neuropathy, or other systemic diseases, excluding decubitus ulcers.

• Ensure documentation clearly specifies "non-pressure" etiology and the precise anatomical location of the left upper arm.
• Verify the depth of the ulceration is explicitly stated as exposing the fat layer; do not assume based on wound appearance alone.
• Distinguish carefully from pressure ulcers (L89.-) and acute ulcers, which would be coded differently.