Specific code 2007 ICD-9-CM Diagnosis Code 475
Peritonsillar abscess
  • ICD-9-CM 475 will be replaced by an equivalent ICD-10-CM code (or codes) when the United States transitions from ICD-9-CM to ICD-10-CM on October 1, 2015.
  • ICD-9-CM 475 is a billable medical code that can be used to specify a diagnosis on a reimbursement claim.
  • You are viewing the 2007 version of ICD-9-CM 475.
  • More recent version(s) of ICD-9-CM 475: 2008 2009 2010 2011 2012 2013 2014.
Disease Synonyms
  • Peritonsillar cellulitis
475 Excludes
  • tonsillitis:
Applies To
  • Abscess of tonsil
  • Peritonsillar cellulitis
  • Quinsy
Convert to ICD-10-CM: 475 converts directly to:
  • 2014 ICD-10-CM J36 Peritonsillar abscess
ICD-9-CM Volume 2 Index entries containing back-references to 475:
  • Abscess (acute) (chronic) (infectional) (lymphangitic) (metastatic) (multiple) (pyogenic) (septic) (with lymphangitis) (see also Cellulitis) 682.9
    • circumtonsillar 475
    • intratonsillar 475
    • peritonsillar 475
    • posttonsillar 475
    • tonsil(s) (lingual) 475
    • tonsillopharyngeal 475
  • Angina (attack) (cardiac) (chest) (effort) (heart) (pectoris) (syndrome) (vasomotor) 413.9
    • phlegmonous 475
    • 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
      • after operation on tonsils 998.11
      • 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
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 475 is one of thousands of ICD-9-CM codes used in healthcare. Although ICD-9-CM and CPT codes are largely numeric, they differ in that CPT codes describe medical procedures and services. Can't find a code? Start at the root of ICD-9-CM, check the 2007 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.