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Z86.17 ✓ Billable

Personal history of Clostridioides difficile infection

ICD-10-CM · FY2026 · Factors Influencing Health Status

Code
Z86.17
System
ICD-10-CM
Billable
Yes — valid for submission
Effective
FY2026
Chapter
Factors Influencing Health Status
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
📖 In-depth coding guide ICD-10 Personal History Codes Z85, Z86, Z87 Guide →

Official coding notes

From CMS's ICD-10-CM Tabular List.

Also known as
  • Personal history of Clostridium difficile colitis (fulminant) (nonfulminant)
  • Personal history of foodborne intoxication by Clostridium difficile
  • Personal history of Pseudomembraneous colitis
  • Conditions classifiable to A00-B89, B99
Excludes1 — never code together
  • enterocolitis due to Clostridium difficile, recurrent (A04.71)
  • personal history of infectious diseases specific to a body system
  • sequelae of infectious and parasitic diseases (B90-B94)
Code first
  • any follow-up examination after treatment (Z09)

Frequently asked questions

What is ICD-10 code Z86.17?
ICD-10-CM code Z86.17 represents Personal history of Clostridioides difficile infection. It is a billable diagnosis code in the Factors Influencing Health Status chapter, effective October 1, 2025 – September 30, 2026.
Is Z86.17 billable?
Yes. Z86.17 is a valid billable ICD-10-CM code for insurance claims and clinical documentation.
What chapter is Z86.17 in?
Z86.17 belongs to the Factors Influencing Health Status chapter (Z00–Z99) of ICD-10-CM.
How do I search for an ICD-10 code for personal history of a condition?
If you are looking for a code documenting a patient's own past diagnosis that is now resolved or inactive — sometimes searched as "history of [condition] ICD-10" — Z86.17 (Personal history of Clostridioides difficile infection) is in the correct Z85–Z87 personal-history block. These codes are reported when a condition no longer requires active treatment but is still clinically relevant.

Related codes in the Z86 category

Z86 Personal history of certain other diseases Non-billable Z86.0 Personal history of in-situ and benign neoplasms and neoplasms of uncertain behavior Non-billable Z86.1 Personal history of infectious and parasitic diseases Non-billable Z86.2 Personal history of diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism Billable Z86.3 Personal history of endocrine, nutritional and metabolic diseases Non-billable Z86.5 Personal history of mental and behavioral disorders Non-billable Z86.6 Personal history of diseases of the nervous system and sense organs Non-billable Z86.7 Personal history of diseases of the circulatory system Non-billable

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