2006 ICD-9-CM Volume 1 Diagnosis Codes Home > Neoplasms 140-239 > Neoplasms Of Uncertain Behavior 235-238 > Neoplasm Of Uncertain Behavior Of Digestive And Respiratory Systems 235.* > 2006 ICD-9-CM Diagnosis 235.8 Neoplasm of uncertain behavior of pleura thymus and mediastinum View the most recent version of ICD-9-CM 235.8 235.8 is a specific code that can be used to specify a diagnosis View the ICD-9-CM Volume 1 235.* hierarchy