Chronic multifocal osteomyelitis, unspecified site

This code signifies a persistent, long-standing infection of the bone and bone marrow that affects multiple, non-contiguous sites throughout the body. It indicates a chronic inflammatory process without specifying the exact anatomical locations involved.

Apply this code when documentation clearly states "chronic multifocal osteomyelitis" and the specific anatomical sites are not identified. This is appropriate for cases where the infection is widespread and has been present for an extended period.

• Avoid using this code if specific anatomical sites are documented; instead, code to the specific site(s) with the appropriate chronicity.
• Ensure the documentation explicitly states "chronic" and "multifocal" to support this code.
• Consider sequencing this code after any underlying systemic conditions that may predispose to osteomyelitis, such as diabetes or sickle cell disease.