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U.S. ICD-10-CM · FY 2027

Z86.17 ICD-10-CM Code: Personal history of Clostridioides difficile infection

A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.

Code definition

Official description

Z86.17

Personal history of Clostridioides difficile infection

ICD-10-CM diagnosis code · United States clinical modification

Classification

Where Z86.17 sits

  1. 1

    Chapter 21

    Factors influencing health status and contact with health services (Z00-Z99)

  2. 2

    Section

    Persons with potential health hazards related to family and personal history and certain conditions influencing health status (Z77-Z99)

  3. 3

    Category Z86

    Personal history of certain other diseases

  4. 4

    Subcategory Z86.1

    Personal history of infectious and parasitic diseases

  5. 5

    Code Z86.17

    Personal history of Clostridioides difficile infection

Documentation details

Notes for this code

Inclusion terms

  • Personal history of Clostridium difficile colitis (fulminant) (nonfulminant)
  • Personal history of foodborne intoxication by Clostridium difficile
  • Personal history of Pseudomembraneous colitis

Code first

No “code first” instruction is listed for Z86.17.

Use additional code

No “use additional code” instruction is listed for Z86.17.

Excludes1

Conditions that should not be reported together with this code.

  • enterocolitis due to Clostridium difficile, recurrent (A04.71)

Excludes2

Conditions not included here that may be reported separately when present.

No Excludes2 note is listed for Z86.17.

Transparency

Source and release

Data release

U.S. ICD-10-CM · FY 2027

Effective date

Oct 1, 2026

This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.

Review the CDC/NCHS ICD-10-CM source

Code-specific guidance

Frequently asked questions

What does ICD-10-CM code Z86.17 mean?

Z86.17 is the FY 2027 U.S. ICD-10-CM code for “Personal history of Clostridioides difficile infection.”

Is Z86.17 a billable or specific ICD-10-CM code?

Yes. In the FY 2027 reference data used on this page, Z86.17 has no child codes and is presented as a billable/specific code. Always confirm the active code set and payer requirements before use.

Where is Z86.17 located in ICD-10-CM?

Z86.17 is listed in Chapter 21, Factors influencing health status and contact with health services (Z00-Z99), within Persons with potential health hazards related to family and personal history and certain conditions influencing health status (Z77-Z99) (Z77–Z99), under category Z86, Personal history of certain other diseases and subcategory Z86.1, Personal history of infectious and parasitic diseases.

What coding notes are listed for Z86.17?

Its listed inclusion terms are Personal history of Clostridium difficile colitis (fulminant) (nonfulminant); Personal history of foodborne intoxication by Clostridium difficile; Personal history of Pseudomembraneous colitis. No code-first instruction is listed. Excludes1 notes: enterocolitis due to Clostridium difficile, recurrent (A04.71). No Excludes2 note is listed.

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