Secondary osteoarthritis, right hand

This code signifies degenerative joint disease affecting the right hand, specifically when it arises as a consequence of another underlying condition or injury, rather than primary (idiopathic) osteoarthritis. It indicates cartilage breakdown and bone changes in the hand joints due to a secondary cause.

Apply this code when documentation clearly states osteoarthritis of the right hand is secondary to a pre-existing condition such as trauma, inflammatory arthritis (e.g., rheumatoid arthritis), metabolic disorders, or congenital deformities. The medical record must specify the laterality (right hand) and the secondary nature of the osteoarthritis.

• Always code the underlying cause of the secondary osteoarthritis first, if known and documented.
• Distinguish carefully between primary (M19.0-) and secondary osteoarthritis; documentation must support the secondary etiology.
• Ensure the specific joint(s) affected within the hand are not separately coded unless explicitly documented as distinct conditions.