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2007 ICD-9-CM Volume 1 Diagnosis Codes Home > Supplementary Classification Of External Causes Of Injury And Poisoning E800-E999 > Misadventures To Patients During Surgical And Medical Care E870-E876 > Failure In Dosage E873.* > 2007 ICD-9-CM Diagnosis E873.6 Nonadministration of necessary drug or medicinal substance  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 Therefore, this code may be out of date.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 E873.6 can be accessed here. E873.6 is a specific code that can be used to specify a diagnosis View the ICD-9-CM Volume 1 E873.* hierarchy