M86.432
BillableChronic osteomyelitis with draining sinus, left radius and ulna
HCC Category Mapping
V28HCC 92 — Bone/Joint/Muscle Infections/Necrosis
0.209V24HCC 39 — Bone/Joint/Muscle Infections/Necrosis
0.482ESRDHCC 39 — Bone/Joint/Muscle Infections/Necrosis
0.000What This Code Means
A long-term bone infection in the left forearm bones (radius and ulna) with an open drainage tract allowing infected material to drain through the skin.
Coding Tips
- •This code encompasses both radius and ulna on the left side; confirm left laterality in documentation
- •Use M86.431 if the infection is on the right side instead
Clinical Significance
This diagnosis captures chronic osteomyelitis with draining sinus of the left radius and ulna, a complex condition affecting both forearm bones with active drainage requiring specialized treatment. The dual bone involvement significantly complicates management and impacts left arm function.
Documentation Requirements
- ✓Clear documentation of left radius and ulna involvement
- ✓Evidence supporting chronic nature (duration >6 weeks or recurrent)
- ✓Confirmation of active draining sinus tract from forearm
- ✓Radiographic studies showing chronic osteomyelitic changes
- ✓Functional assessment of left forearm and drainage status
- ✓Laboratory findings consistent with chronic infection
- ✓Treatment documentation for both infection and drainage
- ✓Clinical correlation with chronic osteomyelitis with draining sinus
Commonly Confused Codes
M86.532 — Other chronic hematogenous osteomyelitis, left radius/ulna, no drainageM86.431 — Same condition but right-sided forearmM86.332 — Chronic multifocal osteomyelitis, left radius/ulna, no drainageM86.132 — Acute osteomyelitis of left radius and ulnaL02.432 — Cutaneous abscess of left forearm, superficial infection
Code Hierarchy
└M86Osteomyelitis└M86.4Chronic osteomyelitis with draining sinus└M86.43Chronic osteomyelitis with draining sinus, radius and ulna└M86.432Chronic osteomyelitis with draining sinus, left radius and ulna
└M86.432Chronic osteomyelitis with draining sinus, left radius and ulna