M86.659
BillableOther chronic osteomyelitis, unspecified thigh
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 chronic bone infection in the thigh bone that has persisted over time, where the specific side is not specified.
Coding Tips
Clinical Significance
Chronic osteomyelitis represents a persistent bone infection that significantly impacts patient morbidity and healthcare utilization. This condition indicates a compromised immune status and bone integrity, requiring long-term antibiotic therapy and potentially surgical intervention, making it a high-risk condition for complications.
Documentation Requirements
- ✓Clear documentation of chronic osteomyelitis diagnosis
- ✓Specification of thigh location (femur involvement)
- ✓Evidence of chronicity through duration or recurrent episodes
- ✓Supporting diagnostic imaging (MRI, bone scan, or CT)
- ✓Laboratory evidence such as elevated ESR, CRP, or positive cultures
- ✓Documentation of antibiotic therapy or surgical treatment
- ✓Assessment of functional impact on patient mobility
- ✓Identification of underlying risk factors or comorbidities
Commonly Confused Codes
M86.10 — Acute osteomyelitis lacks the chronic time component and represents initial bone infectionM87.9 — Aseptic necrosis is bone death without infection, while osteomyelitis involves active bacterial infectionM86.20 — Subacute osteomyelitis represents intermediate stage between acute and chronic phasesM86.9 — Unspecified osteomyelitis lacks the chronic designation and anatomical specificity
Code Hierarchy
└M86Osteomyelitis└M86.6Other chronic osteomyelitis└M86.65Other chronic osteomyelitis, thigh└M86.659Other chronic osteomyelitis, unspecified thigh
└M86.659Other chronic osteomyelitis, unspecified thigh