M86.671

Billable

Other chronic osteomyelitis, right ankle and foot

HCC Category Mapping

V28HCC 92 — Bone/Joint/Muscle Infections/Necrosis

0.209

V24HCC 39 — Bone/Joint/Muscle Infections/Necrosis

0.482

ESRDHCC 39 — Bone/Joint/Muscle Infections/Necrosis

0.000

What This Code Means

A chronic bone infection affecting the right ankle and foot bones that has persisted over time.

Coding Tips

•This code applies to the right side only; verify laterality is documented as right before assigning
•Specify which foot bones are affected if documentation provides this detail for better clinical clarity

Clinical Significance

Chronic osteomyelitis of the right ankle and foot represents a complex bone infection in anatomically intricate structures critical for mobility and weight-bearing. This condition often requires multidisciplinary management and carries high risk for treatment failure, amputation, and permanent disability due to the complexity of ankle and foot anatomy.

Documentation Requirements

✓Clear documentation of chronic osteomyelitis diagnosis
✓Specification of right ankle and/or foot bone involvement
✓Evidence supporting chronic nature of infection
✓Detailed imaging studies showing bone involvement
✓Culture results or tissue biopsy when available
✓Documentation of previous or current antibiotic therapy
✓Assessment of weight-bearing capacity and mobility limitations
✓Identification of specific bones affected within ankle/foot complex

Commonly Confused Codes

M86.171 — Acute osteomyelitis of right ankle/foot represents initial acute presentation L03.116 — Cellulitis of right foot affects soft tissue, not bone M87.074 — Aseptic necrosis of right foot involves bone death without infection M25.571 — Pain in right ankle doesn't indicate active bone infection

Code Hierarchy

└M86Osteomyelitis └M86.6Other chronic osteomyelitis └M86.67Other chronic osteomyelitis, ankle and foot └M86.671Other chronic osteomyelitis, right ankle and foot

└M86.671Other chronic osteomyelitis, right ankle and foot