M86.19

Billable

Other acute osteomyelitis, multiple sites

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 rapidly developing bone infection affecting multiple bones or sites throughout the body.

Coding Tips

•Document all affected sites in the medical record for clinical reference and treatment planning
•Use this code when acute osteomyelitis involves two or more separate anatomical locations

Clinical Significance

Acute multifocal osteomyelitis represents the most severe form of bone infection, affecting multiple bones simultaneously and indicating significant systemic involvement or immunocompromise. This condition requires intensive management and carries high risks for morbidity and mortality.

Documentation Requirements

✓Documentation of multiple bone sites affected simultaneously
✓Evidence of acute onset multifocal bone infection
✓Clinical presentation of systemic bone infection
✓Imaging confirmation of multiple bone involvement
✓Laboratory evidence of severe active infection
✓Assessment of immune status and underlying conditions
✓Documentation of all affected bone sites
✓Comprehensive treatment plan for multifocal disease

Commonly Confused Codes

M8619 vs single site codes — When only one site documented M8609 — Acute hematogenous osteomyelitis, multiple sites M8669 — Chronic osteomyelitis with draining sinus, multiple sites M8629 — Subacute osteomyelitis, multiple sites A41.9 — Sepsis, unspecified organism (systemic infection)

Code Hierarchy

└M86Osteomyelitis └M86.1Other acute osteomyelitis └M86.19Other acute osteomyelitis, multiple sites

└M86.19Other acute osteomyelitis, multiple sites