ICD-10-CM > M00-M99 > M15-M19 > M16 > M16.5 M16.5 Unilateral post-traumatic osteoarthritis of hip Non-Billable/Non-Specific Applicable To Post-traumatic osteoarthritis of hip NOS Codes M16.50Unilateral post-traumatic osteoarthritis, unspecified hipM16.51Unilateral post-traumatic osteoarthritis, right hipM16.52Unilateral post-traumatic osteoarthritis, left hip