ICD-10-CM Code For Osteoarthritis Of First Carpometacarpal Joint: Group Overview
The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group M18 includes osteoarthritis of the first carpometacarpal joint, covering degenerative changes, primary and secondary osteoarthritis, and laterality-specific codes for thumb base arthritis. These ICD-10-CM diagnosis codes are used to document the presence, laterality, and type of thumb carpometacarpal joint osteoarthritis, capturing clinical detail such as primary versus secondary disease and any specified severity. Accurate coding within the ICD-10-CM M18 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.
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ICD-10-CM M18: Osteoarthritis Of First Carpometacarpal Joint Overview
The ICD-10-CM M18 group represents osteoarthritis affecting the first carpometacarpal joint at the base of the thumb, a degenerative joint disease of the hand. These diagnoses target the musculoskeletal system and specifically the carpometacarpal joint of the thumb. Accurate coding matters for clinical records and reimbursement because it reflects the specific joint involved and disease laterality and severity, which can affect claim adjudication and care planning.