M86.539

HCC Category Mapping

What This Code Means

A chronic bone infection of the radius and ulna (forearm bones) that developed from bacteria spreading through the bloodstream, affecting an unspecified side.

Coding Tips

• •Verify documentation specifies 'chronic hematogenous' osteomyelitis to distinguish from other types like contiguous or post-traumatic
• •If laterality is documented, use M86.531 (right) or M86.532 (left) instead of the unspecified code

Clinical Significance

This chronic hematogenous osteomyelitis of unspecified radius/ulna represents a persistent bone infection that developed from bacteria spreading through the bloodstream. The unspecified laterality indicates incomplete documentation but still captures the chronic nature and anatomical involvement, requiring ongoing medical management and monitoring.

Documentation Requirements

• ✓Documentation of chronic duration (>6 weeks or recurrent pattern)
• ✓Evidence of hematogenous spread (bloodstream origin)
• ✓Involvement of radius and/or ulna bones
• ✓Radiographic evidence of bone infection or destruction
• ✓Laboratory markers of infection (ESR, CRP, WBC)
• ✓Clinical presentation consistent with chronic osteomyelitis
• ✓Treatment response or failure documentation
• ✓Absence of draining sinus or acute presentation

Commonly Confused Codes