Chronic osteomyelitis with draining sinus, unsp shoulder

This code signifies a persistent bone infection of the shoulder, characterized by a chronic inflammatory process and the presence of a draining tract or fistula. The infection is long-standing, and the specific shoulder (left or right) is not documented.

Apply this code when documentation clearly indicates chronic osteomyelitis of the shoulder with an associated draining sinus, but the laterality of the shoulder is unspecified. This typically occurs in cases of long-term, unresolved bone infection where purulent material is intermittently or continuously discharged through the skin.

• Ensure documentation explicitly states "chronic" osteomyelitis and the presence of a "draining sinus."
• Avoid using this code if the laterality (left or right shoulder) is specified; instead, use the more specific M86.411 or M86.412.
• Consider sequencing this code after any underlying cause of the osteomyelitis, if known and documented.