2006 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Circulatory System 390-459 > Other Forms Of Heart Disease 420-429 > Conduction Disorders 426.* > 2006 ICD-9-CM Diagnosis 426.9 Conduction disorder unspecified View the most recent version of ICD-9-CM 426.9 Impairment of conduction in heart excitation. It is often applied specifically to atrioventricular heart block. Transient asystole or ventricular fibrillation in the presence of atrioventricular block. 426.9 is a specific code that can be used to specify a diagnosis 426.9 contains 20 index entries View the ICD-9-CM Volume 1 426.* hierarchy Alternate Terminology Heart block NOS Stokes-Adams syndrome  Index entries containing 426.9: Adams-Stokes (-Morgagni) disease or syndrome (syncope with heart block) 426.9 Arrhythmia (auricle) (cardiac) (cordis) (gallop rhythm) (juvenile) (nodal) (reflex) (sinus) (supraventricular) (transitory) (ventricle) 427.9 block 426.9 Block arrhythmic 426.9 cardiac 426.9 conduction 426.9 complete 426.0 heart 426.9 first degree (atrioventricular) 426.11 second degree (atrioventricular) 426.13 third degree (atrioventricular) 426.0 bundle branch (complete) (false) (incomplete) 426.50 bilateral 426.53 left (see also Block, bundle branch, left) 426.3 right (see also Block, bundle branch, right) 426.4 complete (atrioventricular) 426.0 congenital 746.86 incomplete 426.13 intra-atrial 426.6 intraventricular NEC 426.6 sinoatrial 426.6 specified type NEC 426.6 myocardial (see also Block, heart) 426.9 Defect, defective 759.9 conduction (heart) 426.9 bone (see also Deafness, conductive) 389.00 Delay, delayed conduction (cardiac) (ventricular) 426.9 Disease, diseased - see also Syndrome Adams-Stokes (-Morgagni) (syncope with heart block) 426.9 Morgagni-Adams-Stokes (syncope with heart block) 426.9 Stokes-Adams (syncope with heart block) 426.9 Disorder - see also Disease conduction, heart 426.9 specified NEC 426.89 Morgagni-Adams-Stokes syndrome (syncope with heart block) 426.9 Spens' syndrome (syncope with heart block) 426.9 Stokes-Adams syndrome (syncope with heart block) 426.9 Syndrome - see also Disease Adams-Stokes (-Morgagni) (syncope with heart block) 426.9 Morgagni-Adams-Stokes (syncope with heart block) 426.9 Spens' (syncope with heart block) 426.9 Stokes (-Adams) (syncope with heart block) 426.9