ICD-10 Code
International Classification of Diseases, 10th Revision
May 29, 2017

See: Infectious gastroenteritis and colitis, unspecified

  ICD-10 Code for Infectious gastroenteritis & colitis, unspecified A09

A09 is a valid1 ICD 10 diagnosis code.

A09 is valid for submission for HIPAA-covered transactions.

Chapter 1 Certain infectious and parasitic diseases (A00-B99)
Section A00-A09 Intestinal infectious diseases (A00-A09)
Category A09 Infectious gastroenteritis and colitis, unspecified

• See below for any additional coding requirements that may be necessary.

• Check for any notations, inclusions and/or exclusions that are specific to this ICD 10 code before using

1 No additional coding requirements necessary.
Inclusion Term
  • Infectious colitis NOS
  • Infectious enteritis NOS
  • Infectious gastroenteritis NOS
Excludes1
  • colitis NOS (K52.9)
  • diarrhea NOS (R19.7)
  • enteritis NOS (K52.9)
  • gastroenteritis NOS (K52.9)
  • noninfective gastroenteritis and colitis, unspecified (K52.9)
See also ICD 10 code for

Related Terms to “Infectious gastroenteritis and colitis, unspecified”

  • Arthritis, arthritic(acute) (chronic) (nonpyogenic) (subacute) - M19.90
    • in(due to)
      • enteritis, infectious NEC - A09See also category M01
  • Diarrhea, diarrheal(disease) (infantile) (inflammatory) - R19.7
    • dysenteric - A09
    • endemic - A09
    • epidemic - A09
    • infectious - A09
  • Disease, diseasedSee also Syndrome
    • diarrheal, infectious NEC - A09
  • Dysentery, dysenteric(catarrhal) (diarrhea) (epidemic) (hemorrhagic) (infectious) (sporadic) (tropical) - A09
    • arthritis - A09See also category M01
  • Enteritis(acute) (diarrheal) (hemorrhagic) (noninfective) - K52.9
    • epidemic(infectious) - A09
    • infectious NOS - A09
    • septic - A09
  • Enterocolitis - K52.9See also Enteritis
    • infectious NEC - A09
  • Gastroenteritis(acute) (chronic) (noninfectious) - K52.9See also Enteritis
    • epidemic(infectious) - A09
  • Gastroenteropathy - K52.9See also Gastroenteritis
    • infectious - A09
  • Ileitis(chronic) (noninfectious) - K52.9See also Enteritis
    • infectious - A09
  • Ileocolitis - K52.9See also Enteritis
    • infectious - A09
  • Sigmoiditis - K52.9See also Enteritis
    • infectious - A09
  • Ulcer, ulcerated, ulcerating, ulceration, ulcerative
    • dysenteric - A09
Back to A09
See the 2017 ICD-10-CM Coding Guidelines.

When ICD 10 was implemented on October 1, 2015, it did not affect physicians', outpatient facilities', and hospital outpatient departments' use of CPT codes on Medicare Fee-For-Service claims. Providers should continue to use CPT codes to report these services.