2008 ICD-9-CM Volume 1 Diagnosis Codes Home > Injury And Poisoning 800-999 > Injury To Nerves And Spinal Cord 950-957 > Injury To Optic Nerve And Pathways 950.* > 2008 ICD-9-CM Diagnosis 950.1 Injury to optic chiasm  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 Therefore, this code may be out of date.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 950.1 can be accessed here. 950.1 is a specific code that can be used to specify a diagnosis 950.1 contains 1 index entry View the ICD-9-CM Volume 1 950.* hierarchy ICD9Data's sister site ProcedureCodes.com launches with the 2008/09 CPT® codes - read more on the ICD9Data.com blog. Index entries containing 950.1: Injury 959.9 optic 950.9 chiasm 950.1