Effective from
- First observed
Unilateral primary osteoarthritis of first carpometacarpal joint
Category — select a more specific code
CDC/NCHS · FY2016osteoarthritis of spine (M47.-)
For US diagnosis claims covered by HIPAA, ICD-10-CM is required from October 1, 2015.
Use the service date for outpatient/professional claims and the discharge date for hospital inpatient claims. Earlier encounters use ICD-9-CM; each individual code must also be valid for the applicable date.
Official coding guidelines → · CMS ↗First observed · 2015-10-01
No recorded change since first observation
Effective from
Unilateral primary osteoarthritis of first carpometacarpal joint
Category — select a more specific code
CDC/NCHS · FY2016| All editions | Effective from | Code history |
|---|---|---|
| FY2016 | 2015-10-01 | First observed |
| FY2017 | 2016-10-01 | No tabular change |
| FY2018 | 2017-10-01 | No tabular change |
| FY2019 | 2018-10-01 | No tabular change |
| FY2020 | 2019-10-01 | No tabular change |
| FY2020 · April | 2020-04-01 | No tabular change |
| FY2021 | 2020-10-01 | No tabular change |
| FY2021 · 01-01 | 2021-01-01 | No tabular change |
| FY2022 | 2021-10-01 | No tabular change |
| FY2022 · 04-01 | 2022-04-01 | No tabular change |
| FY2023 | 2022-10-01 | No tabular change |
| FY2023 · 04-01 | 2023-04-01 | No tabular change |
| FY2024 | 2023-10-01 | No tabular change |
| FY2024 · 04-01 | 2024-04-01 | No tabular change |
| FY2025 | 2024-10-01 | No tabular change |
| FY2025 · 04-01 | 2025-04-01 | No tabular change |
| FY2026 | 2025-10-01 | No tabular change |
| FY2026 · April | 2026-04-01 | No tabular change |
| FY2027 | 2026-10-01 | No tabular change |
Primary osteoarthritis of first carpometacarpal joint NOS
Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition
Disorders affecting predominantly peripheral (limb) joints
osteoarthritis of spine (M47.-)
M18.10Unilateral primary osteoarthritis of first carpometacarpal joint, unspecified handBillable / specificM18.11Unilateral primary osteoarthritis of first carpometacarpal joint, right handBillable / specificM18.12Unilateral primary osteoarthritis of first carpometacarpal joint, left handBillable / specificOther entries in the same category; these are not automatic substitutes.
| Code | Description | Category · further specificity required |
|---|---|---|
| M18.0 | Bilateral primary osteoarthritis of first carpometacarpal joints | Billable / specific |
| M18.2 | Bilateral post-traumatic osteoarthritis of first carpometacarpal joints | Billable / specific |
| M18.3 | Unilateral post-traumatic osteoarthritis of first carpometacarpal joint | Category · further specificity required |
| M18.4 | Other bilateral secondary osteoarthritis of first carpometacarpal joints | Billable / specific |
| M18.5 | Other unilateral secondary osteoarthritis of first carpometacarpal joint | Category · further specificity required |
| M18.9 | Osteoarthritis of first carpometacarpal joint, unspecified | Billable / specific |
Official titles and instructions are preserved in their source language. Official sources ↗
Excludes 2 · primary osteoarthritis of first carpometacarpal joint (M18.0-, M18.1-)