ICD-10-CM > M00-M99 > M05-M14 > M12 > M12.5 > M12.56 M12.56 Traumatic arthropathy, knee Non-Billable/Non-Specific Codes M12.561Traumatic arthropathy, right kneeM12.562Traumatic arthropathy, left kneeM12.569Traumatic arthropathy, unspecified knee