Other chronic hematogenous osteomyelitis, other site

This code signifies a persistent, long-term infection of the bone and bone marrow that has spread through the bloodstream, affecting an anatomical location other than the ankle, foot, or specific long bones. This condition is characterized by chronic inflammation and bone destruction, often with periods of remission and exacerbation.

Apply this code when documentation confirms chronic osteomyelitis of hematogenous origin in a site not otherwise specified or classified by more specific codes (e.g., spine, pelvis, ribs). Supporting documentation should clearly state the chronicity of the infection and its hematogenous spread, along with the affected "other" bone site.

• Ensure the documentation explicitly states "chronic" and "hematogenous" to differentiate from acute or other forms of osteomyelitis.
• Always attempt to code to a more specific anatomical site if available within the M86.5 subcategory (e.g., M86.50-M86.57).
• Sequencing may require an additional code for the causative organism (e.g., B95.-, B96.-) if identified.