Is ICD-10-CM code Z86.17 billable?

Yes, Z86.17 (Personal history of Clostridioides difficile infection) is a billable ICD-10-CM diagnosis code, valid for reimbursement on HIPAA-covered transactions for FY2027.

Is Z86.17 exempt from POA reporting?

Yes, Z86.17 is on the CMS list of ICD-10-CM codes exempt from Present On Admission (POA) reporting for FY2027. Inpatient claims do not require a POA indicator for this code.

What chapter does ICD-10-CM code Z86.17 belong to?

Z86.17 belongs to Chapter 21 of the ICD-10-CM tabular list: Z00–Z99 (Factors Influencing Health Status and Contact with Health Services).

Is Z86.17 a new ICD-10-CM code for 2027?

Yes, Z86.17 was added or revised in the FY2027 ICD-10-CM update, effective October 1, 2026, as published by the Centers for Medicare and Medicaid Services (CMS).

Z86.17BillableNon-CCNew for FY2027Unacceptable Principal POA Exempt

Personal history of Clostridioides difficile infection

Factors Influencing Health Status and Contact with Health Services·Personal history of infectious and parasitic diseases·subcategory·FY 2027

Also indexed as: History, personal: Clostridium difficile, colitis; Clostridium difficile, difficile infection; Clostridium difficile, foodborne intoxication; infection NEC, Clostridioides difficile; malignant neoplasm, Pseudomembraneous colitis

Instructional notes

Includes: conditions that are coded here

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

Excludes1: not coded here, use a different code

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

Also applies, from Z86.1: Personal history of infectious and parasitic diseases

These notes sit on Z86.1 and apply to every code under it, including Z86.17.

Includes: conditions that are coded here

Conditions classifiable to A00-B89, B99

Excludes1: not coded here, use a different code

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

Also applies, from Z86: Personal history of certain other diseases

These notes sit on Z86 and apply to every code under it, including Z86.17.

Code first: code the underlying condition first, then this code

any follow-up examination after treatment (Z09)

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

These notes sit on Z77-Z99 and apply to every code under it, including Z86.17.

Code also: add a code for this too, order depends on the encounter

any follow-up examination (Z08-Z09)

Where Z86.17 sits

Z77-Z99 Persons with potential health hazards related to family and personal history and certain conditions influencing health status (Z77-Z99)
Z86 Personal history of certain other diseases
Z86.1 Personal history of infectious and parasitic diseases
Z86.17 Personal history of Clostridioides difficile infection

MS-DRGs

As the principal diagnosis, this code groups to these MS-DRGs (v44.0).

DRG 951 Other Factors Influencing Health Status

Code history

FY 2026: replaced Z86.19 (Personal history of other infectious and parasitic diseases)