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2008 ICD-9-CM Volume 1 Diagnosis Codes Home > Neoplasms 140-239 > Carcinoma In Situ 230-234 > Carcinoma In Situ Of Respiratory System 231.* > 2008 ICD-9-CM Diagnosis 231.2 Carcinoma in situ of bronchus and lung  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 Therefore, this code may be out of date.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 231.2 can be accessed here. 231.2 is a specific code that can be used to specify a diagnosis View the ICD-9-CM Volume 1 231.* hierarchy 231.2 also known as: Carina Hilus of lung