2008 ICD-9-CM Volume 1 Diagnosis Codes Home > Neoplasms 140-239 > Malignant Neoplasm Of Lip, Oral Cavity, And Pharynx 140-149 > Malignant Neoplasm Of Oropharynx 146.* > 2008 ICD-9-CM Diagnosis 146.5 Malignant neoplasm of junctional region of oropharynx  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 Therefore, this code may be out of date.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 146.5 can be accessed here. 146.5 is a specific code that can be used to specify a diagnosis View the ICD-9-CM Volume 1 146.* hierarchy ICD9Data's sister site ProcedureCodes.com launches with the 2008/09 CPT® codes - read more on the ICD9Data.com blog. 146.5 also known as: Junction of the free margin of the epiglottis, the aryepiglottic fold, and the pharyngoepiglottic fold