ICD-10-CM > M00-M99 > M05-M14 > M14 > M14.6 > M14.66 M14.66 Charcôt's joint, knee Non-Billable/Non-Specific Codes M14.661Charcôt's joint, right kneeM14.662Charcôt's joint, left kneeM14.669Charcôt's joint, unspecified knee