475Peritonsillar abscess

Diseases of the respiratory system (460–519)›Other diseases of upper respiratory tract (470-478)›475 Peritonsillar abscess
ICD-9-CM 475
CMS Source: final ICD-9-CM release (version date October 1, 2014). Retired from U.S. claims after September 30, 2015.FacebookXLinkedInPrint

475 is a legacy ICD-9-CM diagnosis code for peritonsillar abscess. It was valid on U.S. claims through September 30, 2015 and cannot be reported for services on or after October 1, 2015, when ICD-10-CM replaced the ICD-9 code set. Under the CMS General Equivalence Mappings, its ICD-10-CM replacement is J36 (Peritonsillar abscess), flagged as a direct match.

Code Identity

ICD-9-CM Code
475
Valid for Submission
No — Legacy Code
Code Describes
Peritonsillar abscess
Parent Block
475 Peritonsillar abscess
Short Description
Peritonsillar abscess
ICD-10-CM Replacement
J36

Convert 475 to ICD-10-CM

Based on the final CMS General Equivalence Mappings (GEMs), 475 crosswalks to the following ICD-10-CM code.

ICD-10-CM
J36 Peritonsillar abscess
Exact Match The mapping is direct, with no qualifiers.

Index of Diseases References

Entries in the final ICD-9-CM Index to Diseases and Injuries that point to 475. Tap the icons for the official index conventions.

  • 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
      • 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

Information for Patients

Abscess

An abscess is a pocket of pus. You can get an abscess almost anywhere in your body. When an area of your body becomes infected, your body's immune system tries to fight the infection. White blood cells go to the infected area, collect within the damaged tissue, and cause inflammation. During this process, pus forms.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Questions About 475

Is 475 (peritonsillar abscess) still a valid code?

No. This code belonged to ICD-9-CM, which the United States retired after September 30, 2015. Claims with dates of service on or after October 1, 2015 must use ICD-10-CM codes, such as its replacement J36.

What is the ICD-10 replacement for 475?

The General Equivalence Mappings crosswalk this code directly to ICD-10-CM J36 (Peritonsillar abscess), a one-to-one match.

What did 475 mean?

In the final ICD-9-CM release, this code described peritonsillar abscess. It sat in block 475 Peritonsillar abscess under Diseases of the respiratory system (460–519).