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2008 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.* > 2008 ICD-9-CM Diagnosis 235.9 Neoplasm of uncertain behavior of other and unspecified respiratory organs  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 Therefore, this code may be out of date.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 235.9 can be accessed here. 235.9 is a specific code that can be used to specify a diagnosis View the ICD-9-CM Volume 1 235.* hierarchy 235.9 also known as: Accessory sinuses Middle ear Nasal cavities Respiratory organ NOS 235.9 excludes: ear (external) (skin) (238.2) nose (238.8) skin (238.2)