Osteoarthritis of hip (M16) ICD-10-CM
The M16 code range covers osteoarthritis of hip with 19 ICD-10-CM diagnosis codes. 15 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
Codes in the M16 Range 19 codes · 15 billable
- M16 Osteoarthritis of hipNon-billable
- M16.0 Bilateral primary osteoarthritis of hip
- M16.1 Unilateral primary osteoarthritis of hipNon-billable
- M16.10 Unilateral primary osteoarthritis, unspecified hip
- M16.11 Unilateral primary osteoarthritis, right hip
- M16.12 Unilateral primary osteoarthritis, left hip
- M16.2 Bilateral osteoarthritis resulting from hip dysplasia
- M16.3 Unilateral osteoarthritis resulting from hip dysplasiaNon-billable
- M16.30 Unilateral osteoarthritis resulting from hip dysplasia, unspecified hip
- M16.31 Unilateral osteoarthritis resulting from hip dysplasia, right hip
- M16.32 Unilateral osteoarthritis resulting from hip dysplasia, left hip
- M16.4 Bilateral post-traumatic osteoarthritis of hip
- M16.5 Unilateral post-traumatic osteoarthritis of hipNon-billable
- M16.50 Unilateral post-traumatic osteoarthritis, unspecified hip
- M16.51 Unilateral post-traumatic osteoarthritis, right hip
- M16.52 Unilateral post-traumatic osteoarthritis, left hip
- M16.6 Other bilateral secondary osteoarthritis of hip
- M16.7 Other unilateral secondary osteoarthritis of hip
- M16.9 Osteoarthritis of hip, unspecified
About the M16 Code Range
The ICD-10 codes in the M16 section classify various types of osteoarthritis of the hip, capturing differences in location, cause, and laterality. These codes help specify whether the osteoarthritis is primary or secondary, affects one or both hips, and whether it is related to conditions like hip dysplasia or trauma.
For example, M16.0 is used for bilateral primary osteoarthritis of the hip, which includes terms like "primary coxarthrosis, bilateral" or "osteoarthritis of bilateral hip joints." Unilateral cases are coded under M16.1 with further detail distinguishing right (M16.11) and left hips (M16.12). Osteoarthritis resulting from hip dysplasia is coded separately, such as M16.2 for bilateral and M16.3 for unilateral involvement, clarifying terms like "coxarthrosis resulting from dysplasia." Post-traumatic osteoarthritis, meaning joint degeneration following injury, is classified under M16.4 (bilateral) and M16.5 (unilateral). Additional codes specify other types of secondary osteoarthritis. These distinctions ensure accurate documentation and treatment planning when using the ICD-10 code for osteoarthritis of hip, supporting clinicians and coders in addressing the exact nature and side of the hip affected.
Questions About This Page
How many billable codes are in the M16 range?
Of the 19 codes in this range, 15 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.
What does the M16 range classify?
The range classifies osteoarthritis of hip. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
