Z20.09 Contact with and (suspected) exposure to other intestinal infectious diseases

✓ Billable ICD-10-CM 2026
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The ICD-10-CM code for Contact with and (suspected) exposure to other intestinal infectious diseases is Z20.09 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Section
Z20-Z29: Persons with potential health hazards related to communicable diseases (Z20-Z29)
Category Z20
23 codes (18 billable)
FY2026 Status
Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to Z20.09:

  • Contact (with) › cholera
  • Contact (with) › intestinal infectious disease NEC
  • Exposure (to) › intestinal infectious disease NEC
  • Exposure (to) › cholera

U.S. Hospital Utilization

  • An estimated 60 U.S. inpatient stays in 2021 included Z20.09 among the documented diagnoses.

Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.

Official Coding Guidelines

Used with any code in range A00.0-T88.9, Z00-Z99

1) Used with any code in the range of A00.0-T88.9, Z00-Z99 An external cause code may be used with any code in the range of A00.0-T88.9, Z00-Z99, classification that represents a health condition due to an external cause. Though they are most applicable to injuries, they are also valid for use with such things as infections or diseases due to an external source, and other health conditions, such as a heart attack that occurs during strenuous physical activity.

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.20.a.1
Additional codes with observation code (fragment)

observation code, but only if they are unrelated to the suspected condition being observed.

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.21.c.6

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

Cite This Page

Reference Z20.09 with the canonical source and edition:

Z20.09 — Contact with and (suspected) exposure to other intestinal infectious diseases. ICD-10 Coding Pro (ICD-10-CM FY2026). https://icd10codingpro.com/codes/Z20.09

Canonical URL: https://icd10codingpro.com/codes/Z20.09

Related Codes

Parent Code

Z20 Contact with and (suspected) exposure to communicable diseases

Related Codes in Z20

Z20 Contact with and (suspected) exposure to communicable diseases Z20.0 Contact with and (suspected) exposure to intestinal infectious diseases Z20.01 Contact with and (suspected) exposure to intestinal infectious diseases due to Escherichia coli (E. coli) Z20.1 Contact with and (suspected) exposure to tuberculosis Z20.2 Contact with and (suspected) exposure to infections with a predominantly sexual mode of transmission Z20.3 Contact with and (suspected) exposure to rabies Z20.4 Contact with and (suspected) exposure to rubella Z20.5 Contact with and (suspected) exposure to viral hepatitis Z20.6 Contact with and (suspected) exposure to human immunodeficiency virus [HIV] Z20.7 Contact with and (suspected) exposure to pediculosis, acariasis and other infestations Z20.8 Contact with and (suspected) exposure to other communicable diseases Z20.81 Contact with and (suspected) exposure to other bacterial communicable diseases Z20.810 Contact with and (suspected) exposure to anthrax Z20.811 Contact with and (suspected) exposure to meningococcus Z20.818 Contact with and (suspected) exposure to other bacterial communicable diseases Z20.82 Contact with and (suspected) exposure to other viral communicable diseases Z20.820 Contact with and (suspected) exposure to varicella Z20.821 Contact with and (suspected) exposure to Zika virus Z20.822 Contact with and (suspected) exposure to COVID-19 Z20.828 Contact with and (suspected) exposure to other viral communicable diseases
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Reviewed by Prajwal Shrestha, CPC, CRC
Certified Professional Coder (CPC) and Certified Risk Adjustment Coder (CRC) · AAPC Member ID 01997614 · About · Editorial policy · Content last reviewed: 2025-10-01

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