Transient synovitis, unspecified wrist

This code signifies a temporary, non-infectious inflammation of the synovial membrane lining the joint capsule of an unspecified wrist. It typically presents with acute joint pain and swelling without evidence of trauma or systemic disease. The condition is self-limiting and resolves without residual damage.

Apply this code when documentation clearly indicates a diagnosis of transient synovitis affecting the wrist, and the specific laterality (right or left) is not documented. This diagnosis is often made after ruling out other causes of wrist pain, such as fracture, infection, or chronic inflammatory conditions.

• Ensure documentation specifies "transient synovitis" and not a more chronic or specific form of synovitis.
• If laterality (right or left wrist) is documented, a more specific code from the M67.33 series should be used.
• Consider sequencing this code after any acute injury codes if the synovitis is a direct result of trauma, though transient synovitis is often idiopathic.