Other chronic osteomyelitis, left hand

This code signifies a persistent, long-standing infection of the bone in the left hand, excluding acute forms or those specifically due to a prosthetic joint. It indicates an inflammatory process within the bone marrow and cortex that has become chronic.

Apply this code when documentation clearly states "chronic osteomyelitis" affecting the left hand. Supporting documentation should include imaging reports (e.g., X-ray, MRI) showing bone changes consistent with chronic infection, and often culture results confirming the infectious agent.

• Ensure laterality is precisely documented as "left hand"; do not use for unspecified or right-hand involvement.
• Distinguish carefully from acute osteomyelitis (M86.0-) and osteomyelitis associated with prosthetic joints (T84.6-T84.7).
• Look for terms like "recurrent," "long-standing," or "non-resolving" to support the chronic nature.