Chronic osteomyelit w draining sinus, right radius and ulna

This code signifies a persistent, long-term infection of the bone (osteomyelitis) affecting both the radius and ulna in the right forearm. A key characteristic is the presence of a draining sinus, which is an abnormal channel allowing pus or infected material to escape from the bone to the skin surface. This indicates an ongoing inflammatory process that has breached the soft tissues.

Use this code when documentation clearly states chronic osteomyelitis of the right radius and ulna, specifically noting the presence of a draining sinus. This typically applies to patients presenting with persistent pain, swelling, erythema, and purulent discharge from a skin opening over the affected forearm bones. Supporting documentation would include imaging reports (e.g., X-ray, MRI) confirming osteomyelitis and clinical notes describing the chronic nature and the draining sinus.

• Ensure the documentation specifies "chronic" osteomyelitis; acute osteomyelitis uses a different subcategory.
• Verify the laterality (right) and the specific bones involved (radius and ulna) are clearly documented.
• Do not confuse with osteomyelitis without a draining sinus (M86.439) or acute osteomyelitis (M86.0-M86.3).