Other chronic osteomyelitis, unspecified humerus

This code signifies a persistent, long-standing infection of the bone in an unspecified part of the humerus, not otherwise specified as acute or subacute. It indicates an ongoing inflammatory process within the humeral bone marrow and cortex, typically resulting from a prior acute infection or trauma.

Use this code when documentation clearly states "chronic osteomyelitis" affecting the humerus, but the specific location (e.g., proximal, shaft, distal) within the humerus is not detailed. This code is appropriate when the infection is not explicitly described as acute or subacute, implying a prolonged course. Supporting documentation includes physician notes, imaging reports (X-ray, MRI, bone scan), and pathology reports confirming chronic bone infection.

• Do not use this code if the documentation specifies the chronicity as acute or subacute; use the appropriate M86.6- subcategory.
• Avoid using this code if the specific anatomical site within the humerus (e.g., proximal, distal, shaft) is documented; instead, select a more specific M86.62- code.
• Always sequence this code after any underlying cause of the osteomyelitis, such as an open fracture or surgical complication, if applicable.