ICD-10-CM > M00-M99 > M86-M90 > M86 > M86.2 > M86.23 M86.23 Subacute osteomyelitis, radius and ulna Non-Billable/Non-Specific Codes M86.231Subacute osteomyelitis, right radius and ulnaM86.232Subacute osteomyelitis, left radius and ulnaM86.239Subacute osteomyelitis, unspecified radius and ulna