2021 ICD-10-CM Codes for Disord of myoneural junction and muscle in dis classd elswhr (G73)

Clinical Terms for Disord of myoneural junction and muscle in dis classd elswhr (G73)

Lambert-Eaton Myasthenic Syndrome-. An autoimmune disease characterized by weakness and fatigability of proximal muscles, particularly of the pelvic girdle, lower extremities, trunk, and shoulder girdle. There is relative sparing of extraocular and bulbar muscles. CARCINOMA, SMALL CELL of the lung is a frequently associated condition, although other malignancies and autoimmune diseases may be associated. Muscular weakness results from impaired impulse transmission at the NEUROMUSCULAR JUNCTION. Presynaptic calcium channel dysfunction leads to a reduced amount of acetylcholine being released in response to stimulation of the nerve.