Chronic osteomyelit w draining sinus, left tibia and fibula

This code signifies a persistent, long-standing infection of the bone (osteomyelitis) affecting both the tibia and fibula in the left lower leg. A key characteristic is the presence of a draining sinus, indicating a tract from the infected bone to the skin surface, allowing pus or fluid to escape.

Apply this code when documentation clearly states chronic osteomyelitis of the left tibia and fibula, specifically noting the presence of a draining sinus. This is typically seen in cases of recurrent or refractory bone infections, often following trauma, surgery, or systemic infection.

• Ensure documentation specifies "chronic" osteomyelitis and the presence of a "draining sinus" for accurate code assignment.
• Verify laterality (left) and the specific bones involved (tibia and fibula).
• Do not confuse with acute osteomyelitis (M86.0-) or osteomyelitis without a draining sinus (M86.6-).