ICD-10-CM Diagnosis Code (2025)
Official Description for M18.4
Other bilateral secondary osteoarthritis of first carpometacarpal joints
Parent Code (Less Specific):
About ICD-10-CM Code M18.4 (Other bilateral secondary osteoarthritis of first carpometacarpal joints)
ICD-10-CM code M18.4 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM M18.4 became effective on October 1, 2024.
This page provides detailed information about M18.4 - Other bilateral secondary osteoarthritis of first carpometacarpal joints. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Other bilateral secondary osteoarthritis of first carpometacarpal joints.