Chronic multifocal osteomyelitis, right humerus

This code signifies a persistent, long-standing infection of the bone marrow and surrounding bone tissue affecting multiple distinct areas within the right humerus. The "chronic" aspect indicates that the infection has been ongoing for an extended period, often with periods of remission and exacerbation, rather than an acute, sudden onset.

Use this code when documentation clearly states a diagnosis of chronic osteomyelitis involving the right humerus, specifically noting its multifocal nature. This typically applies to patients with recurrent bone infections, non-healing wounds, or persistent pain and inflammation in the right upper arm due to osteomyelitis.

• Ensure documentation specifies "chronic" and "multifocal" to differentiate from acute or localized osteomyelitis.
• Verify the laterality (right humerus) is clearly stated; codes exist for left and unspecified humerus.
• Look for supporting evidence such as imaging reports (X-ray, MRI, bone scan) showing multifocal bone involvement, biopsy results, or long-term antibiotic treatment.