2008 ICD-9-CM Volume 1 Diagnosis Codes Home > Congential Anomalies 740-759 > Other Congenital Anomalies Of Nervous System 742.* > 2008 ICD-9-CM Diagnosis 742.53 Hydromyelia  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 Therefore, this code may be out of date.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 742.53 can be accessed here. 742.53 is a specific code that can be used to specify a diagnosis 742.53 contains 2 index entries View the ICD-9-CM Volume 1 742.* hierarchy ICD9Data's sister site ProcedureCodes.com launches with the 2008/09 CPT® codes - read more on the ICD9Data.com blog. 742.53 also known as: Hydrorhachis Index entries containing 742.53: Hydromyelia 742.53 Hydrorachis 742.53