M86.60
BillableOther chronic osteomyelitis, unspecified site
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 of unknown or unspecified location in the body.
Coding Tips
- •Avoid using this code if the infection site can be identified; be specific about location
- •Query provider for clarification on infection site when possible
Clinical Significance
This code represents chronic osteomyelitis of unspecified etiology and location, indicating incomplete documentation that limits optimal patient care planning. While still capturing the chronic nature of bone infection requiring ongoing treatment, more specific coding would better reflect disease severity and treatment needs.
Documentation Requirements
- ✓Documentation of chronic nature (>6 weeks duration or recurrent)
- ✓Evidence of bone infection without specified etiology
- ✓Unspecified anatomical location of infection
- ✓Imaging studies confirming presence of osteomyelitis
- ✓Laboratory markers supporting infection or inflammation
- ✓Assessment of functional impact and disability
- ✓Treatment plan for chronic bone infection
- ✓Attempts to identify specific site and etiology when possible
Commonly Confused Codes
M86.9 — Osteomyelitis, unspecified (lacks chronic specification)M86.50 — Other chronic hematogenous osteomyelitis, unspecified site (hematogenous origin)M86.40 — Chronic osteomyelitis with draining sinus, unspecified site (has sinus)M86.10 — Other acute osteomyelitis, unspecified site (acute phase)M89.9 — Disorder of bone, unspecified (non-infectious pathology)
Code Hierarchy
└M86Osteomyelitis└M86.6Other chronic osteomyelitis└M86.60Other chronic osteomyelitis, unspecified site
└M86.60Other chronic osteomyelitis, unspecified site