2006 ICD-9-CM Volume 1 Diagnosis Codes Home > Congenital Anomalies 740-759 > 2006 ICD-9-CM Diagnosis 748 Congenital anomalies of respiratory system View the most recent version of ICD-9-CM 748 Congenital structural abnormalities of the respiratory system. 748 is a non-specific code that cannot be used to specify a diagnosis 748 Excludes congenital central alveolar hypoventilation syndrome (327.25) congenital defect of diaphragm (756.6)