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2008 ICD-9-CM Volume 1 Diagnosis Codes Home > Neoplasms 140-239 > Malignant Neoplasm Of Respiratory And Intrathoracic Organs 160-165 > Malignant Neoplasm Of Larynx 161.* > 2008 ICD-9-CM Diagnosis 161.9 Malignant neoplasm of larynx unspecified  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 Therefore, this code may be out of date.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 161.9 can be accessed here. A malignant tumor involving the larynx. The majority are carcinomas. -- 2003 161.9 is a specific code that can be used to specify a diagnosis View the ICD-9-CM Volume 1 161.* hierarchy