ICD-10-CM > M00-M99 > M15-M19 > M16 > M16.1 M16.1 Unilateral primary osteoarthritis of hip Non-Billable/Non-Specific Applicable To Primary osteoarthritis of hip NOS Codes M16.10Unilateral primary osteoarthritis, unspecified hipM16.11Unilateral primary osteoarthritis, right hipM16.12Unilateral primary osteoarthritis, left hip