Chronic multifocal osteomyelitis, other site

This code signifies a persistent, widespread infection of bone and bone marrow that affects multiple, non-contiguous skeletal sites. It indicates an ongoing inflammatory process within the bone, distinct from an acute or subacute presentation.

Assign this code when documentation clearly indicates a chronic osteomyelitis affecting more than one bone location, excluding specific sites like the spine or jaw, which have their own codes. Supporting documentation should detail the chronicity of the infection and the multifocal involvement, often confirmed by imaging studies and culture results.

• Differentiate from acute or subacute osteomyelitis; chronicity must be explicitly stated or clearly implied by treatment duration/history.
• Ensure the "other site" designation is appropriate; verify that no more specific anatomical site code exists for the documented locations.
• Code any associated infectious organism (B95-B97) as an additional diagnosis, if identified.