Question: Is there a specific diagnosis code for Isaacs syndrome?
Answer: The two closest ICD-9 Codes to describe Isaacs syndrome are 358.8 (Other specified myoneural disorders) or 333.2 (Myoclonus), which describes the spontaneous movements and contractions that most Isaacs Syndrome patients experience.
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Isaacs syndrome (also known as neuromyotonia, Isaacs-Mertens 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.