AHA Coding Clinic® for ICD-9 - 2011 Issue 4; VOLUMES 1 & 2 NEW/REVISED CODES

Lambert-Eaton Syndrome

Effective October 1, 2011, codes 358.30, Lambert-Eaton syndrome, unspecified; 358.31, Lambert-Eaton syndrome in neoplastic disease; and 358.39, Lambert-Eaton syndrome in other diseases classified elsewhere, were created for Lambert-Eaton syndrome. Lambert-Eaton syndrome (also known as Lambert-Eaton myasthenic syndrome) is an autoimmune disorder that occurs when there is a disruption of electrical impulse communication between the nerve and muscle cells. The disruption is associated with antibodies that prevent the release of the neurotransmitter acetylcholine from nerve endings joined to muscles. The result is muscle weakness, usually of the pelvis, hip, thigh, and arms, a tingling sensation in the...

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