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Home / ICD-10-CM / Chapter 21: Factors influencing health status and contact with health services (Z00-Z99) / Persons with potential health hazards related to family and personal history and certain conditions influencing health status (Z77-Z99)

Z86.17: Personal history of Clostridioides difficile infection

ICD-10-CM code Z86.17

New code · FY2027

Billable: use this code on claims.

New code, effective October 1, 2026 (FY2027). Before that, this condition was coded as Z86.19.

Code breakdown

Z86.17

Z86CategoryPersonal history of certain other diseases
1Character 4Personal history of infectious and parasitic diseases
7Character 5Personal history of Clostridioides difficile infection

Coding notes

Inclusion terms

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

Excludes1

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

Inclusion terms (from Z86.1)

Conditions classifiable to A00-B89, B99

Excludes1 (from Z86.1)

personal history of infectious diseases specific to a body system
sequelae of infectious and parasitic diseases (B90-B94)

Code first (from Z86)

any follow-up examination after treatment (Z09)

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All FY2027 ICD-10-CM changes

ICD-10-CM codes and descriptions are from the CMS and NCHS code files. Coverage is from the CMS Medicare Coverage Database billing and coding articles.