ICD-10-CM > M00-M99 > M00-M02 > M02 > M02.2 > M02.26 M02.26 Postimmunization arthropathy, knee Non-Billable/Non-Specific Codes M02.261Postimmunization arthropathy, right kneeM02.262Postimmunization arthropathy, left kneeM02.269Postimmunization arthropathy, unspecified knee