ICD-10-CM > M00-M99 > M86-M90 > M86 > M86.4 > M86.43 M86.43 Chronic osteomyelitis with draining sinus, radius and ulna Non-Billable/Non-Specific Codes M86.431Chronic osteomyelitis with draining sinus, right radius and ulnaM86.432Chronic osteomyelitis with draining sinus, left radius and ulnaM86.439Chronic osteomyelitis with draining sinus, unspecified radius and ulna