M86.559

HCC Category Mapping

What This Code Means

A chronic bone infection of the thighbone (femur) that developed from bacteria spreading through the bloodstream, with unspecified laterality.

Coding Tips

• •Use only when the side of the femur cannot be determined from documentation
• •Query the provider or review imaging to determine if right or left femur is affected

Clinical Significance

Chronic hematogenous osteomyelitis of unspecified femur represents a serious bone infection affecting the body's largest weight-bearing bone. The unspecified laterality suggests documentation gaps that should be addressed, though the condition still requires intensive management due to the femur's critical functional importance.

Documentation Requirements

• ✓Documentation of chronic duration (>6 weeks or recurrent pattern)
• ✓Evidence of hematogenous spread (bloodstream origin)
• ✓Femur bone involvement without laterality specification
• ✓Radiographic confirmation of bone infection
• ✓Laboratory studies supporting infection (inflammatory markers)
• ✓Assessment of weight-bearing capacity and mobility
• ✓Treatment plan including antibiotic therapy
• ✓Justification for unspecified laterality (unclear documentation or bilateral)

Commonly Confused Codes