Specific code 2012 ICD-9-CM Diagnosis Code 566
Abscess of anal and rectal regions
  • Short description: Anal & rectal abscess.
  • ICD-9-CM 566 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 566 is a billable medical code that can be used to specify a diagnosis on a reimbursement claim.
  • You are viewing the 2012 version of ICD-9-CM 566.
  • More recent version(s) of ICD-9-CM 566: 2013 2014.
Disease Synonyms
  • Anal abscess
  • Anorectal abscess
  • Intersphincteric abscess
  • Intrasphincteric abscess
  • Ischiorectal abscess
  • Ischiorectal fistula
  • Perianal abscess
  • Perianal cellulitis
  • Perirectal abscess
  • Perirectal cellulitis
  • Rectal abscess
  • Supralevator abscess
Applies To
  • Abscess:
    • ischiorectal
    • perianal
    • perirectal
  • Cellulitis:
    • anal
    • perirectal
    • rectal
  • Ischiorectal fistula
Convert to ICD-10-CM: 566 converts approximately to:
  • 2014 ICD-10-CM K61.0 Anal abscess
    Or:
  • 2014 ICD-10-CM K61.1 Rectal abscess
    Or:
  • 2014 ICD-10-CM K61.3 Ischiorectal abscess
ICD-9-CM Volume 2 Index entries containing back-references to 566:
  • Abscess (acute) (chronic) (infectional) (lymphangitic) (metastatic) (multiple) (pyogenic) (septic) (with lymphangitis) (see also Cellulitis) 682.9
    • anorectal 566
    • anus 566
    • intersphincteric (anus) 566
    • intestine, intestinal 569.5
      • rectal 566
    • ischiorectal 566
    • marginal (anus) 566
    • pararectal 566
    • perianal 566
    • periproctic 566
    • perirectal (staphylococcal) 566
    • postanal 566
    • rectum 566
    • retrorectal 566
  • Cellulitis (diffuse) (with lymphangitis) (see also Abscess) 682.9
    • anus 566
    • perirectal 566
    • rectum 566
  • Fistula (sinus) 686.9
    • ischiorectal (fossa) 566
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 566 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 2012 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.