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Osteoarthritis of first carpometacarpal joint, unspecified M18.9

The ICD10 code for the diagnosis "Osteoarthritis of first carpometacarpal joint, unspecified" is "M18.9". M18.9 is a VALID/BILLABLE ICD10 code, i.e it is valid for submission for HIPAA-covered transactions.

  • M18.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2019 edition of ICD-10-CM M18.9 became effective on October 1, 2018.
  • This is the American ICD-10-CM version of M18.9 - other international versions of ICD-10 M18.9 may differ.

Codes: = Billable

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.