2006 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Respiratory System 460-519 > Other Diseases Of Upper Respiratory Tract 470-478 > 2006 ICD-9-CM Diagnosis 475 Peritonsillar abscess View the most recent version of ICD-9-CM 475 An abscess in the peritonsillar tissue extending into the tonsil capsule, resulting from suppuration of the tonsil. 475 is a specific code that can be used to specify a diagnosis 475 contains 17 index entries Alternate Terminology Abscess of tonsil Peritonsillar cellulitis Quinsy 475 Excludes tonsillitis: acute or NOS (463) chronic (474.0)  Index entries containing 475: Abscess (acute) (chronic) (infectional) (lymphangitic) (metastatic) (multiple) (pyogenic) (septic) (with lymphangitis) (see also Cellulitis) 682.9 circumtonsillar 475 intratonsillar 475 lingual 529.0 tonsil 475 peritonsillar 475 posttonsillar 475 tonsil(s) (lingual) 475 tonsillopharyngeal 475 Angina (attack) (cardiac) (chest) (effort) (heart) (pectoris) (syndrome) (vasomotor) 413.9 phlegmonous 475 diphtheritic 032.0 tonsil 475 Cellulitis (diffuse) (with lymphangitis) (see also Abscess) 682.9 peritonsillar 475 tonsil 475 Cynanche tonsillaris 475 Gangrene, gangrenous (anemia) (artery) (cellulitis) (dermatitis) (dry) (infective) (moist) (pemphigus) (septic) (skin) (stasis) (ulcer) 785.4 quinsy 475 Hemorrhage, hemorrhagic (nontraumatic) 459.0 peritonsillar tissue 474.8 due to infection 475 Peritonsillitis 475 Quinsy (gangrenous) 475 Tonsillitis (acute) (catarrhal) (croupous) (follicular) (gangrenous) (infective) (lacunar) (lingual) (malignant) (membranous) (phlegmonous) (pneumococcal) (pseudomembranous) (purulent) (septic) (staphylococcal) (subacute) (suppurative) (toxic) (ulcerative) (vesicular) (viral) 463 parenchymatous 475