Crepitant synovitis (acute) (chronic), left hand

This code signifies inflammation of the synovial membrane in the left hand, characterized by a crackling or grating sound (crepitus) upon movement. This condition can be acute or chronic and is often associated with pain and limited range of motion.

Apply this code when documentation explicitly states "crepitant synovitis" affecting the left hand. This diagnosis is typically supported by physical examination findings of crepitus and tenderness, and potentially imaging studies confirming synovial inflammation.

• Ensure documentation specifies "crepitant" synovitis; simple synovitis of the hand would be coded differently.
• Verify laterality (left hand) is clearly documented to avoid miscoding.
• Distinguish from tenosynovitis (M65.842), which involves the tendon sheath, though crepitus can be present in both.