M86.042

HCC Category Mapping

What This Code Means

A bone infection in the left hand caused by bacteria spreading through the bloodstream, typically affecting the small bones of the hand.

Coding Tips

• •Confirm documentation clearly indicates 'left' hand to differentiate from M86.041
• •Document which specific hand bones are affected if possible for clinical clarity

Clinical Significance

Acute hematogenous osteomyelitis of the left hand represents serious bloodstream-spread infection to the complex small bones of the left hand, requiring immediate aggressive treatment to preserve function. This diagnosis indicates high risk for compartment syndrome, joint destruction, and permanent loss of hand function with significant impact on activities of daily living.

Documentation Requirements

• ✓Documentation of acute osteomyelitis specifically in left hand bones
• ✓Clear evidence of hematogenous spread of infection
• ✓Clinical examination findings of left hand involvement
• ✓Imaging studies demonstrating left hand bone infection
• ✓Microbiological studies including blood and tissue cultures
• ✓Intensive treatment with IV antibiotics and surgical intervention
• ✓Assessment for compartment syndrome and neurovascular compromise

Commonly Confused Codes