M86.561

HCC Category Mapping

What This Code Means

A chronic bone infection of the right shinbone and smaller leg bone (tibia and fibula) that developed from bacteria spreading through the bloodstream.

Coding Tips

• •This code covers both the tibia and fibula on the right side; do not assign separate codes for each bone
• •Confirm right leg is documented to avoid miscoding as left or unspecified

Clinical Significance

Chronic hematogenous osteomyelitis affecting the right tibia and fibula represents a complex bone infection involving the primary weight-bearing bones of the lower leg. This condition significantly impacts mobility and may lead to long-term disability, requiring coordinated medical and surgical management.

Documentation Requirements

• ✓Documentation of chronic nature (>6 weeks duration or recurrent)
• ✓Evidence of hematogenous origin (bloodstream spread)
• ✓Specific involvement of right tibia and/or fibula
• ✓Imaging studies showing bone infection (plain films, MRI, bone scan)
• ✓Laboratory evidence of infection (ESR, CRP, cultures)
• ✓Assessment of lower extremity function and weight-bearing ability
• ✓Documentation of treatment regimen and surgical interventions
• ✓Evaluation for complications such as fractures or deformity

Commonly Confused Codes