ICD-10-CM Section · M15-M19
Osteoarthritis
130 codes in this section
130
Total Codes
98
Billable
32
Header (Non-Billable)
5
Top-Level Codes
About Section M15-M19
Section M15-M19 (M15-M19) covers osteoarthritis. It sits within the Diseases of the musculoskeletal system and connective tissue chapter (M00-M99). This section contains 130 ICD-10-CM codes, 98 billable diagnoses you can submit on a claim, and 32 non-billable header codes used to organize the hierarchy.
Codes are organized below by 3-character root. Click the root to see all subcodes underneath it, or click any individual code for full coverage data, payer policies, and linked CPT procedures.
Codes in M15-M19
Grouped by 3-character root code. Click any code for full detail.
M15
Polyosteoarthritis
7 subcodes
| M15.0 | Primary generalized (osteo)arthritis | Billable |
| M15.1 | Heberden's nodes (with arthropathy) | Billable |
| M15.2 | Bouchard's nodes (with arthropathy) | Billable |
| M15.3 | Secondary multiple arthritis | Billable |
| M15.4 | Erosive (osteo)arthritis | Billable |
| M15.8 | Other polyosteoarthritis | Billable |
| M15.9 | Polyosteoarthritis, unspecified | Billable |
M16
Osteoarthritis of hip
18 subcodes
| M16.0 | Bilateral primary osteoarthritis of hip | Billable |
| M16.1 | Unilateral primary osteoarthritis of hip | Header |
| M16.10 | Unilateral primary osteoarthritis, unspecified hip | Billable |
| M16.11 | Unilateral primary osteoarthritis, right hip | Billable |
| M16.12 | Unilateral primary osteoarthritis, left hip | Billable |
| M16.2 | Bilateral osteoarthritis resulting from hip dysplasia | Billable |
| M16.3 | Unilateral osteoarthritis resulting from hip dysplasia | Header |
| M16.30 | Unilateral osteoarthritis resulting from hip dysplasia, unspecified hip | Billable |
| M16.31 | Unilateral osteoarthritis resulting from hip dysplasia, right hip | Billable |
| M16.32 | Unilateral osteoarthritis resulting from hip dysplasia, left hip | Billable |
| M16.4 | Bilateral post-traumatic osteoarthritis of hip | Billable |
| M16.5 | Unilateral post-traumatic osteoarthritis of hip | Header |
| M16.50 | Unilateral post-traumatic osteoarthritis, unspecified hip | Billable |
| M16.51 | Unilateral post-traumatic osteoarthritis, right hip | Billable |
| M16.52 | Unilateral post-traumatic osteoarthritis, left hip | Billable |
| M16.6 | Other bilateral secondary osteoarthritis of hip | Billable |
| M16.7 | Other unilateral secondary osteoarthritis of hip | Billable |
| M16.9 | Osteoarthritis of hip, unspecified | Billable |
M17
Osteoarthritis of knee
13 subcodes
| M17.0 | Bilateral primary osteoarthritis of knee | Billable |
| M17.1 | Unilateral primary osteoarthritis of knee | Header |
| M17.10 | Unilateral primary osteoarthritis, unspecified knee | Billable |
| M17.11 | Unilateral primary osteoarthritis, right knee | Billable |
| M17.12 | Unilateral primary osteoarthritis, left knee | Billable |
| M17.2 | Bilateral post-traumatic osteoarthritis of knee | Billable |
| M17.3 | Unilateral post-traumatic osteoarthritis of knee | Header |
| M17.30 | Unilateral post-traumatic osteoarthritis, unspecified knee | Billable |
| M17.31 | Unilateral post-traumatic osteoarthritis, right knee | Billable |
| M17.32 | Unilateral post-traumatic osteoarthritis, left knee | Billable |
| M17.4 | Other bilateral secondary osteoarthritis of knee | Billable |
| M17.5 | Other unilateral secondary osteoarthritis of knee | Billable |
| M17.9 | Osteoarthritis of knee, unspecified | Billable |
M18
Osteoarthritis of first carpometacarpal joint
16 subcodes
| M18.0 | Bilateral primary osteoarthritis of first carpometacarpal joints | Billable |
| M18.1 | Unilateral primary osteoarthritis of first carpometacarpal joint | Header |
| M18.10 | Unilateral primary osteoarthritis of first carpometacarpal joint, unspecified hand | Billable |
| M18.11 | Unilateral primary osteoarthritis of first carpometacarpal joint, right hand | Billable |
| M18.12 | Unilateral primary osteoarthritis of first carpometacarpal joint, left hand | Billable |
| M18.2 | Bilateral post-traumatic osteoarthritis of first carpometacarpal joints | Billable |
| M18.3 | Unilateral post-traumatic osteoarthritis of first carpometacarpal joint | Header |
| M18.30 | Unilateral post-traumatic osteoarthritis of first carpometacarpal joint, unspecified hand | Billable |
| M18.31 | Unilateral post-traumatic osteoarthritis of first carpometacarpal joint, right hand | Billable |
| M18.32 | Unilateral post-traumatic osteoarthritis of first carpometacarpal joint, left hand | Billable |
| M18.4 | Other bilateral secondary osteoarthritis of first carpometacarpal joints | Billable |
| M18.5 | Other unilateral secondary osteoarthritis of first carpometacarpal joint | Header |
| M18.50 | Other unilateral secondary osteoarthritis of first carpometacarpal joint, unspecified hand | Billable |
| M18.51 | Other unilateral secondary osteoarthritis of first carpometacarpal joint, right hand | Billable |
| M18.52 | Other unilateral secondary osteoarthritis of first carpometacarpal joint, left hand | Billable |
| M18.9 | Osteoarthritis of first carpometacarpal joint, unspecified | Billable |
M19
Other and unspecified osteoarthritis
71 subcodes
| M19.0 | Primary osteoarthritis of other joints | Header |
| M19.01 | Primary osteoarthritis, shoulder | Header |
| M19.011 | Primary osteoarthritis, right shoulder | Billable |
| M19.012 | Primary osteoarthritis, left shoulder | Billable |
| M19.019 | Primary osteoarthritis, unspecified shoulder | Billable |
| M19.02 | Primary osteoarthritis, elbow | Header |
| M19.021 | Primary osteoarthritis, right elbow | Billable |
| M19.022 | Primary osteoarthritis, left elbow | Billable |
| M19.029 | Primary osteoarthritis, unspecified elbow | Billable |
| M19.03 | Primary osteoarthritis, wrist | Header |
| M19.031 | Primary osteoarthritis, right wrist | Billable |
| M19.032 | Primary osteoarthritis, left wrist | Billable |
| M19.039 | Primary osteoarthritis, unspecified wrist | Billable |
| M19.04 | Primary osteoarthritis, hand | Header |
| M19.041 | Primary osteoarthritis, right hand | Billable |
| M19.042 | Primary osteoarthritis, left hand | Billable |
| M19.049 | Primary osteoarthritis, unspecified hand | Billable |
| M19.07 | Primary osteoarthritis ankle and foot | Header |
| M19.071 | Primary osteoarthritis, right ankle and foot | Billable |
| M19.072 | Primary osteoarthritis, left ankle and foot | Billable |
| M19.079 | Primary osteoarthritis, unspecified ankle and foot | Billable |
| M19.09 | Primary osteoarthritis, other specified site | Billable |
| M19.1 | Post-traumatic osteoarthritis of other joints | Header |
| M19.11 | Post-traumatic osteoarthritis, shoulder | Header |
| M19.111 | Post-traumatic osteoarthritis, right shoulder | Billable |
| M19.112 | Post-traumatic osteoarthritis, left shoulder | Billable |
| M19.119 | Post-traumatic osteoarthritis, unspecified shoulder | Billable |
| M19.12 | Post-traumatic osteoarthritis, elbow | Header |
| M19.121 | Post-traumatic osteoarthritis, right elbow | Billable |
| M19.122 | Post-traumatic osteoarthritis, left elbow | Billable |
| M19.129 | Post-traumatic osteoarthritis, unspecified elbow | Billable |
| M19.13 | Post-traumatic osteoarthritis, wrist | Header |
| M19.131 | Post-traumatic osteoarthritis, right wrist | Billable |
| M19.132 | Post-traumatic osteoarthritis, left wrist | Billable |
| M19.139 | Post-traumatic osteoarthritis, unspecified wrist | Billable |
| M19.14 | Post-traumatic osteoarthritis, hand | Header |
| M19.141 | Post-traumatic osteoarthritis, right hand | Billable |
| M19.142 | Post-traumatic osteoarthritis, left hand | Billable |
| M19.149 | Post-traumatic osteoarthritis, unspecified hand | Billable |
| M19.17 | Post-traumatic osteoarthritis, ankle and foot | Header |
| M19.171 | Post-traumatic osteoarthritis, right ankle and foot | Billable |
| M19.172 | Post-traumatic osteoarthritis, left ankle and foot | Billable |
| M19.179 | Post-traumatic osteoarthritis, unspecified ankle and foot | Billable |
| M19.19 | Post-traumatic osteoarthritis, other specified site | Billable |
| M19.2 | Secondary osteoarthritis of other joints | Header |
| M19.21 | Secondary osteoarthritis, shoulder | Header |
| M19.211 | Secondary osteoarthritis, right shoulder | Billable |
| M19.212 | Secondary osteoarthritis, left shoulder | Billable |
| M19.219 | Secondary osteoarthritis, unspecified shoulder | Billable |
| M19.22 | Secondary osteoarthritis, elbow | Header |
| M19.221 | Secondary osteoarthritis, right elbow | Billable |
| M19.222 | Secondary osteoarthritis, left elbow | Billable |
| M19.229 | Secondary osteoarthritis, unspecified elbow | Billable |
| M19.23 | Secondary osteoarthritis, wrist | Header |
| M19.231 | Secondary osteoarthritis, right wrist | Billable |
| M19.232 | Secondary osteoarthritis, left wrist | Billable |
| M19.239 | Secondary osteoarthritis, unspecified wrist | Billable |
| M19.24 | Secondary osteoarthritis, hand | Header |
| M19.241 | Secondary osteoarthritis, right hand | Billable |
| M19.242 | Secondary osteoarthritis, left hand | Billable |
| M19.249 | Secondary osteoarthritis, unspecified hand | Billable |
| M19.27 | Secondary osteoarthritis, ankle and foot | Header |
| M19.271 | Secondary osteoarthritis, right ankle and foot | Billable |
| M19.272 | Secondary osteoarthritis, left ankle and foot | Billable |
| M19.279 | Secondary osteoarthritis, unspecified ankle and foot | Billable |
| M19.29 | Secondary osteoarthritis, other specified site | Billable |
| M19.9 | Osteoarthritis, unspecified site | Header |
| M19.90 | Unspecified osteoarthritis, unspecified site | Billable |
| M19.91 | Primary osteoarthritis, unspecified site | Billable |
| M19.92 | Post-traumatic osteoarthritis, unspecified site | Billable |
| M19.93 | Secondary osteoarthritis, unspecified site | Billable |
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Verified against the CMS 2026 code set on May 31, 2026.
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