2006 ICD-9-CM Volume 1 Diagnosis Codes Home > Neoplasms 140-239 > Malignant Neoplasm Of Other And Unspecified Sites 190-199 > Malignant Neoplasm Of Brain 191.* > 2006 ICD-9-CM Diagnosis 191.7 Malignant neoplasm of brain stem View the most recent version of ICD-9-CM 191.7 191.7 is a specific code that can be used to specify a diagnosis View the ICD-9-CM Volume 1 191.* hierarchy Alternate Terminology Cerebral peduncle Medulla oblongata Midbrain Pons