Non-prs chronic ulcer of right hand with necrosis of bone

This code signifies a persistent, non-pressure-related open sore on the right hand that has progressed to involve the underlying bone tissue, indicating osteonecrosis. It describes a severe stage of ulceration not caused by sustained pressure, often associated with systemic conditions or vascular insufficiency.

Apply this code when documentation clearly states a chronic ulcer on the patient's right hand, explicitly noting the presence of bone necrosis. This is typically seen in patients with conditions like diabetes, peripheral vascular disease, or autoimmune disorders, where tissue breakdown has extended deep into the bone.

• Ensure documentation specifies "right hand" and "necrosis of bone" to differentiate from other sites or tissue depths.
• Do not confuse with pressure ulcers (L89.-) or ulcers without bone involvement.
• Always sequence this code after any underlying systemic condition (e.g., diabetes mellitus) that contributed to the ulcer formation.