Primary osteoarthritis, right hand

This code signifies degenerative joint disease affecting the right hand, specifically due to primary osteoarthritis. It indicates the gradual breakdown of cartilage in the joints of the right hand, leading to pain, stiffness, and reduced function, without an identifiable underlying cause such as trauma or inflammatory conditions.

Apply this code when documentation clearly states a diagnosis of primary osteoarthritis localized to the right hand. This is appropriate for patients presenting with chronic right hand pain, swelling, and crepitus, where imaging (e.g., X-rays) confirms osteoarthritic changes and no secondary cause is identified.

• Ensure the documentation specifies "primary" osteoarthritis and explicitly identifies the "right hand" as the affected site.
• Do not use this code for osteoarthritis due to trauma, inflammatory conditions, or other secondary causes; refer to codes in the M19.1- or M19.2- series.
• Consider additional codes for specific joint involvement within the hand (e.g., M19.043 for primary osteoarthritis of the carpometacarpal joint, right hand) if documented with sufficient specificity.