ICD-10-CM > M00-M99 > M65-M67 > M65 > M65.1 > M65.16 M65.16 Other infective (teno)synovitis, knee Non-Billable/Non-Specific Codes M65.161Other infective (teno)synovitis, right kneeM65.162Other infective (teno)synovitis, left kneeM65.169Other infective (teno)synovitis, unspecified knee