M18.1 - Unilateral primary osteoarthritis of first carpometacarpal joint
- Applicable to Unilateral primary osteoarthritis of first carpometacarpal joint
- The 2025 edition of ICD10-CM M18.1 became effective on October 1, 2024.
- This is the American ICD10-CM version of M18.1 - other international versions of ICD10 M18.1 may differ.
- M18.1 is a Non-Billable / Non-Specific ICD10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
- M18.1 Code should not be used for billing or reimbursement purposes as there are multiple ICD-10 CM codes below it that contain a greater level of detail.
- M18.1 - Unilateral primary osteoarthritis of first carpometacarpal joint
- M18.1 - Unilateral primary osteoarthritis of first carpometacarpal joint
- M18.10 - Unilateral primary osteoarthritis of first carpometacarpal joint, unspecified hand
- M18.11 - Unilateral primary osteoarthritis of first carpometacarpal joint, right hand
- M18.12 - Unilateral primary osteoarthritis of first carpometacarpal joint, left hand
Inclusion terms help to clarify and specify the conditions or diseases covered by a particular ICD-10-CM code.
Inclusion Term:
- Primary osteoarthritis of first carpometacarpal joint NOS
Non-Billable/Non-Specific Code
The following codes above M18.1 contain annotation back-references that may be applicable to M18.1:
- Chapter: M00-M99 - Diseases of the musculoskeletal system and connective tissue
- Section: M15-M19 - Osteoarthritis
- Category: M18 - Osteoarthritis of first carpometacarpal joint
Browse other similar CM codes:
Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.
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