2008 ICD-9-CM Volume 1 Diagnosis Codes Home > Congential Anomalies 740-759 > Other Congenital Anomalies Of Heart 746.* > 2008 ICD-9-CM Diagnosis 746.81 Subaortic stenosis congenital  On October 1, 2008 the 2009 ICD-9-CM codes came into effect. Therefore, this code may be out of date. The 2009 version of ICD-9-CM 746.81 can be accessed here. 746.81 is a specific code that can be used to specify a diagnosis 746.81 contains 3 index entries View the ICD-9-CM Volume 1 746.* hierarchy ICD9Data's sister site ProcedureCodes.com launches with the 2008/09 CPT® codes - read more on the ICD9Data.com blog. Index entries containing 746.81: Anomaly, anomalous (congenital) (unspecified type) 759.9 heart 746.9 valve NEC 746.9 aortic 746.9 stenosis 746.3 subaortic 746.81 Stenosis (cicatricial) - see also Stricture subaortic 746.81 hypertrophic (idiopathic) 425.1 Stricture (see also Stenosis) 799.89 subaortic 746.81 hypertrophic (acquired) (idiopathic) 425.1