ICD-10-CM > M00-M99 > M00-M02 > M00 > M00.8 > M00.86 M00.86 Arthritis due to other bacteria, knee Non-Billable/Non-Specific Codes M00.861Arthritis due to other bacteria, right kneeM00.862Arthritis due to other bacteria, left kneeM00.869Arthritis due to other bacteria, unspecified knee