Non-pressure chronic ulcer of l up arm with necrosis of bone

This code describes a persistent, non-pressure-related open sore on the left upper arm that has progressed to involve the underlying bone tissue, exhibiting signs of necrosis. This indicates significant tissue damage extending beyond the skin and subcutaneous layers.

Apply this code when documentation clearly specifies a chronic ulcer on the patient's left upper arm, explicitly stating it is not pressure-induced and has bone necrosis. This typically occurs in patients with compromised circulation, diabetes, or other systemic conditions leading to chronic wound formation.

• Always confirm the laterality (left) and the specific anatomical site (upper arm).
• Ensure the documentation explicitly states "non-pressure" and "necrosis of bone" to support this specific code.
• Do not use for pressure ulcers; refer to the L89 series for those conditions.