2006 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.* > 2006 ICD-9-CM Diagnosis 474.1 Hypertrophy of tonsils and adenoids View the most recent version of ICD-9-CM 474.1 474.1 is a non-specific code that cannot be used to specify a diagnosis View the ICD-9-CM Volume 1 474.* hierarchy Alternate Terminology Enlargement of tonsils or adenoids Hyperplasia of tonsils or adenoids Hypertrophy of tonsils or adenoids