ICD-10-CM > M00-M99 > M15-M19 > M17 M17 Osteoarthritis of knee Non-Billable/Non-Specific Codes M17.0Bilateral primary osteoarthritis of kneeM17.1Unilateral primary osteoarthritis of kneeM17.10Unilateral primary osteoarthritis, unspecified kneeM17.11Unilateral primary osteoarthritis, right kneeM17.12Unilateral primary osteoarthritis, left kneeM17.2Bilateral post-traumatic osteoarthritis of kneeM17.3Unilateral post-traumatic osteoarthritis of kneeM17.30Unilateral post-traumatic osteoarthritis, unspecified kneeM17.31Unilateral post-traumatic osteoarthritis, right kneeM17.32Unilateral post-traumatic osteoarthritis, left kneeM17.4Other bilateral secondary osteoarthritis of kneeM17.5Other unilateral secondary osteoarthritis of kneeM17.9Osteoarthritis of knee, unspecified