Chronic multifocal osteomyelitis, right radius and ulna

This code signifies a persistent, long-standing infection of multiple bone sites within the right radius and ulna. It indicates an inflammatory process that has been ongoing for an extended period, affecting more than one distinct area of these specific forearm bones.

Apply this code when documentation clearly states "chronic multifocal osteomyelitis" affecting the right radius and ulna. Supporting documentation should detail the chronicity of the infection and specify involvement of both the radius and ulna on the right side, often confirmed by imaging studies and culture results.

• Ensure documentation specifies "chronic" and "multifocal" to differentiate from acute or localized forms.
• Verify laterality (right) and specific bones (radius and ulna) are clearly stated; do not assume based on general forearm pain.
• Consider sequencing this code after any underlying cause of the osteomyelitis, if known and documented (e.g., open wound, trauma).