Chronic osteomyelitis with draining sinus, multiple sites

This code signifies a persistent, long-term infection of bone and bone marrow that has progressed to form one or more abnormal passages (sinuses) to the skin surface, affecting multiple distinct anatomical locations. The infection is characterized by ongoing inflammation and purulent discharge.

Apply this code when documentation explicitly states chronic osteomyelitis with a draining sinus present in more than one bone or site. Supporting documentation should include physician notes detailing the chronicity of the infection, the presence of a draining sinus, and the involvement of multiple anatomical locations.

• Ensure documentation specifies "chronic" osteomyelitis and the presence of a "draining sinus" in multiple sites.
• Do not use this code for acute osteomyelitis or chronic osteomyelitis without a draining sinus.
• Consider sequencing this code after any underlying cause or associated condition, if applicable.