Neurology & Pain Management Coding Alert

Question: Is there a specific diagnosis code for Isaac's syndrome?

Texas Subscriber

Answer: The two closest ICD-9 codes to describe Isaac's syndrome are 358.8 (Other specified myoneural disorders) or 333.2 (Myoclonus), which describes the spontaneous movements and contractions that most Isaac's syndrome patients experience.
 
Isaac's syndrome (also known as neuromyotonia, Isaac's-Merten's syndrome, continuous muscle fiber activity syndrome, and quantal squander syndrome) is a rare neuromuscular disorder caused by continuous signaling of the end regions of peripheral nerve fibers that activate muscle fibers (motor neurons).
 
Ask your physician to help you choose between 358.8 and 333.2.