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2008 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Respiratory System 460-519 > Other Diseases Of Upper Respiratory Tract 470-478 > Chronic Disease Of Tonsils And Adenoids 474.* > 2008 ICD-9-CM Diagnosis 474.0 Chronic tonsillitis and adenoiditis  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 Therefore, this code may be out of date.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 474.0 can be accessed here. 474.0 is a non-specific code that cannot be used to specify a diagnosis View the ICD-9-CM Volume 1 474.* hierarchy 474.0 excludes: acute or unspecified tonsillitis (463)