Selection criteria for VGER QRS phenotype

33415 Resection or incision of subvalvular tissue for discrete subvalvular aortic stenosis. 33416 Ventriculomyotomy (-myectomy) for idiopathic hypertrophic subaortic stenosis (eg, asymmetric septal hypertrophy) 33420 Valvotomy, mitral valve; closed heart. 33422 Valvotomy, mitral valve; open heart, with cardiopulmonary bypass ................
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