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ICD-10-CM 2027 diagnosis code

A04.7Enterocolitis due to Clostridium difficile

Not billable — use a more specific code

A04.7 is a header code, so it can't be reported by itself. Choose one of the 2 more specific codes beneath it.

Code last changed in FY2018 (effective October 1, 2017). Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About A04.7

A04.7 is the ICD-10-CM diagnosis code for enterocolitis due to Clostridium difficile. It belongs to category A04 (other bacterial intestinal infections), block A00-A09 (intestinal infectious diseases) and chapter 1 (certain infectious and parasitic diseases). It is a header code, so it can't be reported by itself; one of its 2 subcodes must be used instead.

Within A04 (other bacterial intestinal infections), A04.7 is specifically for enterocolitis due to Clostridium difficile. Related codes cover enteropathogenic Escherichia coli infection (A04.0), enterotoxigenic Escherichia coli infection (A04.1), enteroinvasive Escherichia coli infection (A04.2), enterohemorrhagic Escherichia coli infection (A04.3), other intestinal Escherichia coli infections (A04.4), campylobacter enteritis (A04.5), enteritis due to Yersinia enterocolitica (A04.6), other specified bacterial intestinal infections (A04.8) and 1 more.

To report this condition, pick the subcode that matches the documentation: A04.71 (recurrent) and A04.72 (not specified as recurrent).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015, and changed in FY2018 (expanded into subcodes).

Specific codes under A04.7

Coding notes

Applicable toConditions and synonyms classified to this code
  • Clostridioides difficile colitis
  • Foodborne intoxication by Clostridium difficile
  • Pseudomembraneous colitis

Notes that apply from higher levels

Instructions written at a parent level also apply to A04.7.

› From A04 Other bacterial intestinal infections
Excludes1
  • bacterial foodborne intoxications, NEC (A05.-)
  • tuberculous enteritis (A18.32)

Broader instructions also apply from Chapter 1: Certain infectious and parasitic diseases.

Codes whose notes reference A04.7

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • FY2018 (effective 10/1/2017): Expanded — no longer billable

Common questions about A04.7

Is A04.7 billable?

No. A04.7 is a header code. Report one of its more specific subcodes instead.