ICD-10-CM > M00-M99 > M86-M90 > M86 > M86.3 > M86.36 M86.36 Chronic multifocal osteomyelitis, tibia and fibula Non-Billable/Non-Specific Codes M86.361Chronic multifocal osteomyelitis, right tibia and fibulaM86.362Chronic multifocal osteomyelitis, left tibia and fibulaM86.369Chronic multifocal osteomyelitis, unspecified tibia and fibula