Other chronic hematogenous osteomyelitis, unspecified site

This code signifies a persistent bone infection that has spread through the bloodstream, affecting an unknown or unspecified skeletal location. It indicates a long-standing inflammatory process within the bone marrow and cortical bone, resulting from bacterial or fungal dissemination via the circulatory system.

Apply this code when documentation clearly indicates chronic hematogenous osteomyelitis but the specific anatomical site of infection is not identified. This is appropriate for cases where the physician has diagnosed chronic osteomyelitis of hematogenous origin but has not specified the affected bone (e.g., "chronic hematogenous osteomyelitis, site unknown").

• Do not use if the specific bone or joint affected by chronic hematogenous osteomyelitis is documented; instead, use a more specific M86.5- subcategory.
• Always query the provider for a more specific site if possible, as this code represents an unspecified diagnosis.
• Consider co-reporting with codes for underlying conditions that may predispose to hematogenous spread, such as bacteremia or sepsis, if documented.