M86.8X3

Billable

Other osteomyelitis, forearm

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 bone infection (osteomyelitis) affecting the forearm (radius and/or ulna) that doesn't fit into other specific osteomyelitis categories.

Coding Tips

•Document which bone(s) of the forearm are affected for clinical clarity, though the code encompasses both radius and ulna
•Ensure this is not acute or chronic osteomyelitis before assigning this 'other' category code

Clinical Significance

Other osteomyelitis of the forearm represents bone infection affecting the radius and/or ulna that doesn't conform to typical acute or chronic patterns. This condition can severely impact hand and wrist function due to the forearm's critical role in rotation and fine motor activities, requiring specialized treatment to preserve upper extremity function.

Documentation Requirements

✓Documentation of osteomyelitis affecting forearm bones
✓Clinical justification for 'other' classification
✓Specification of radius and/or ulna involvement
✓Supporting imaging demonstrating bone infection
✓Culture results or histopathological confirmation when available
✓Comprehensive treatment plan including antimicrobials
✓Assessment of forearm rotation and hand function
✓Documentation of atypical presentation features

Commonly Confused Codes

M86.631 — Chronic osteomyelitis of right radius and ulna has chronicity established M86.131 — Acute osteomyelitis of right radius and ulna represents acute presentation M70.03 — Crepitant synovitis of wrist affects synovium, not bone S52.9 — Fracture of forearm is traumatic injury, not infection

Code Hierarchy

└M86Osteomyelitis └M86.8Other osteomyelitis └M86.8XOther osteomyelitis └M86.8X3Other osteomyelitis, forearm

└M86.8X3Other osteomyelitis, forearm