Chronic osteomyelitis with draining sinus, left hand

This diagnosis code signifies a persistent, long-standing infection of the bone in the left hand, characterized by the presence of a draining sinus tract. This sinus acts as an abnormal channel from the infected bone to the skin surface, allowing pus and inflammatory exudate to escape. The condition is chronic, indicating a prolonged course of infection, often resistant to initial treatments.

Apply this code when documentation clearly indicates a diagnosis of osteomyelitis affecting the left hand, specifically noting its chronic nature and the presence of a draining sinus. This is typically seen in cases of recurrent bone infection, often following trauma, surgery, or open fractures, where a fistula to the skin has formed. Supporting documentation should include physician notes detailing the chronicity, location, and the observation or history of a draining sinus.

• Ensure documentation explicitly states "chronic" and "draining sinus" in relation to osteomyelitis of the left hand.
• Distinguish from acute osteomyelitis (M86.1-) or osteomyelitis without a draining sinus (M86.3-).
• Consider sequencing with external cause codes if the osteomyelitis resulted from a specific injury or surgical complication.