M18.4
BillableOther bilateral secondary osteoarthritis of first carpometacarpal joints
M18.4 is the ICD-10-CM code for Other bilateral secondary osteoarthritis of first carpometacarpal joints. It is a billable, specific code valid for reimbursement.
M00-M99 Diseases of the musculoskeletal system and connective tissue
No additional coding notes for this code.
Frequently asked questions
- What is ICD-10 code M18.4?
- M18.4 is the ICD-10-CM code for "Other bilateral secondary osteoarthritis of first carpometacarpal joints". It falls under M00-M99 Diseases of the musculoskeletal system and connective tissue.
- Is M18.4 a billable code?
- Yes — M18.4 is a billable, specific ICD-10-CM code valid for reimbursement.
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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