M86.169
BillableOther acute osteomyelitis, unspecified tibia and fibula
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 rapidly developing bone infection in the shinbone and smaller leg bone, but the specific side is not documented.
Coding Tips
- •Query provider for laterality documentation to assign a more specific code if possible
- •Use this code only when laterality cannot be determined from available documentation
Clinical Significance
Acute osteomyelitis of unspecified tibia and fibula represents incomplete documentation of a complex dual-bone infection affecting weight-bearing bones. The involvement of both lower leg bones indicates significant tissue involvement requiring comprehensive treatment, but lacks laterality specification.
Documentation Requirements
- ✓Documentation of tibia and fibula involvement without laterality
- ✓Evidence of acute infection in lower leg bones
- ✓Clinical presentation of dual bone infection
- ✓Imaging showing both bone involvement
- ✓Laboratory markers of active infection
- ✓Provider query for laterality specification
- ✓Assessment of weight-bearing impact
- ✓Treatment plan for complex bone infection
Commonly Confused Codes
M86129 — Acute hematogenous osteomyelitis of unspecified tibia and fibulaM86669 — Chronic osteomyelitis with draining sinus of unspecified tibia and fibulaM86269 — Subacute osteomyelitis of unspecified tibia and fibulaM86161/162 — Right/left specific codes when laterality availableS82.90XA — Unspecified fracture of unspecified lower leg
Code Hierarchy
└M86Osteomyelitis└M86.1Other acute osteomyelitis└M86.16Other acute osteomyelitis, tibia and fibula└M86.169Other acute osteomyelitis, unspecified tibia and fibula
└M86.169Other acute osteomyelitis, unspecified tibia and fibula