Non-pressure chronic ulcer of unsp ankle w necrosis of bone

This code signifies a long-standing open sore on an unspecified ankle, not caused by pressure, that has progressed to involve the underlying bone tissue, which is now dead. This indicates a severe, deep ulceration with significant tissue destruction.

Apply this code when documentation clearly states a chronic, non-pressure ulcer of the ankle with confirmed bone necrosis. This typically occurs in patients with underlying conditions like peripheral vascular disease or diabetes. Documentation must specify "non-pressure" and "necrosis of bone."

• Ensure the documentation explicitly states "non-pressure" to differentiate from pressure ulcers.
• Verify that bone involvement and necrosis are clearly documented, not just deep tissue involvement.
• Do not use this code if the ankle laterality (right or left) is specified; use the appropriate laterality code.