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2007 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.* > 2007 ICD-9-CM Diagnosis 474.00 Chronic tonsillitis  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 Therefore, this code may be out of date.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 474.00 can be accessed here. 474.00 is a specific code that can be used to specify a diagnosis 474.00 contains 10 index entries View the ICD-9-CM Volume 1 474.* hierarchy Index entries containing 474.00: Hypertrophy, hypertrophic tonsil (faucial) (infective) (lingual) (lymphoid) 474.11 with tonsillitis 474.00 and adenoiditis 474.02 Infection, infected, infective (opportunistic) 136.9 focal tonsils 474.00 and adenoids 474.02 lymphoid tissue, base of tongue or posterior pharynx, NEC 474.00 pharynx 478.29 posterior, lymphoid 474.00 tonsil (faucial) (lingual) (pharyngeal) 474.00 acute or subacute 463 and adenoid 474.02 tag 474.00 Remnant tonsil 474.8 infected 474.00 Septic - see also condition tonsils 474.00 and adenoids 474.02 Tonsillitis (acute) (catarrhal) (croupous) (follicular) (gangrenous) (infective) (lacunar) (lingual) (malignant) (membranous) (phlegmonous) (pneumococcal) (pseudomembranous) (purulent) (septic) (staphylococcal) (subacute) (suppurative) (toxic) (ulcerative) (vesicular) (viral) 463 chronic 474.00 hypertrophic 474.00