2006 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Circulatory System 390-459 > Other Forms Of Heart Disease 420-429 > ICD-9-CM Diagnosis 426 Conduction disorders 426 is a non-specific code that cannot be used to specify a diagnosis ICD-9-CM Diagnosis 426.0 Atrioventricular block complete 426.0 is a specific code that can be used to specify a diagnosis 426.0 contains 15 index entries ICD-9-CM Diagnosis 426.1 Atrioventricular block other and unspecified 426.1 is a non-specific code that cannot be used to specify a diagnosis ICD-9-CM Diagnosis 426.10 Atrioventricular block unspecified 426.10 is a specific code that can be used to specify a diagnosis 426.10 contains 4 index entries ICD-9-CM Diagnosis 426.11 First degree atrioventricular block 426.11 is a specific code that can be used to specify a diagnosis 426.11 contains 3 index entries ICD-9-CM Diagnosis 426.12 Mobitz (type) ii atrioventricular block 426.12 is a specific code that can be used to specify a diagnosis 426.12 contains 3 index entries ICD-9-CM Diagnosis 426.13 Other second degree atrioventricular block 426.13 is a specific code that can be used to specify a diagnosis 426.13 contains 9 index entries ICD-9-CM Diagnosis 426.2 Left bundle branch hemiblock 426.2 is a specific code that can be used to specify a diagnosis 426.2 contains 7 index entries ICD-9-CM Diagnosis 426.3 Other left bundle branch block 426.3 is a specific code that can be used to specify a diagnosis 426.3 contains 8 index entries ICD-9-CM Diagnosis 426.4 Right bundle branch block 426.4 is a specific code that can be used to specify a diagnosis 426.4 contains 7 index entries ICD-9-CM Diagnosis 426.5 Bundle branch block other and unspecified 426.5 is a non-specific code that cannot be used to specify a diagnosis ICD-9-CM Diagnosis 426.50 Bundle branch block unspecified A form of heart block in which one ventricle is excited before the other because of absence of conduction in one of the branches of the bundle of His. 426.50 is a specific code that can be used to specify a diagnosis 426.50 contains 8 index entries ICD-9-CM Diagnosis 426.51 Right bundle branch block and left posterior fascicular block 426.51 is a specific code that can be used to specify a diagnosis 426.51 contains 2 index entries ICD-9-CM Diagnosis 426.52 Right bundle branch block and left anterior fascicular block 426.52 is a specific code that can be used to specify a diagnosis 426.52 contains 2 index entries ICD-9-CM Diagnosis 426.53 Other bilateral bundle branch block 426.53 is a specific code that can be used to specify a diagnosis 426.53 contains 9 index entries ICD-9-CM Diagnosis 426.54 Trifascicular block 426.54 is a specific code that can be used to specify a diagnosis 426.54 contains 1 index entry ICD-9-CM Diagnosis 426.6 Other heart block Disturbance of heart conduction in which the atrial response is delayed or omitted because of partial or complete interference with the propagation of impulses from the sinoatrial node to the atria. 426.6 is a specific code that can be used to specify a diagnosis 426.6 contains 19 index entries ICD-9-CM Diagnosis 426.7 Anomalous atrioventricular excitation A form of pre-excitation characterized by a short PR interval and a long QRS interval with a delta wave. 426.7 is a specific code that can be used to specify a diagnosis 426.7 contains 11 index entries ICD-9-CM Diagnosis 426.8 Other specified conduction disorders 426.8 is a non-specific code that cannot be used to specify a diagnosis ICD-9-CM Diagnosis 426.81 Lown-ganong-levine syndrome A form of pre-excitation characterized by a short PR interval associated with a normal QRS complex. 426.81 is a specific code that can be used to specify a diagnosis 426.81 contains 4 index entries ICD-9-CM Diagnosis 426.82 Long qt syndrome 426.82 is a specific code that can be used to specify a diagnosis 426.82 contains 6 index entries ICD-9-CM Diagnosis 426.89 Other specified conduction disorders 426.89 is a specific code that can be used to specify a diagnosis 426.89 contains 9 index entries ICD-9-CM Diagnosis 426.9 Conduction disorder unspecified 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