---
title: "ICD-10-CM Z20.4: Contact with and (suspected) exposure to… | BillingBrief"
description: "ICD-10-CM code Z20.4: Contact with and (suspected) exposure to rubella. Category, related codes, and the official source, in plain English."
canonical: "https://billingbrief.com/icd10/z20.4/"
language: "en"
---

# Z20.4 Contact with and (suspected) exposure to rubella

ICD-10-CM · [CMS code reference](#source)

**Official ICD-10-CM description:** Contact with and (suspected) exposure to rubella

## Coding notes

From the ICD-10-CM FY2027 (effective October 1, 2026) tabular list. Notes on a parent code or category apply here too.

### Excludes1

Not coded together with this code. The exception is when the two conditions are unrelated to each other.

-   carrier of infectious disease (Z22.-)
-   diagnosed current infectious or parasitic disease -see Alphabetic Index

### Excludes2

Not part of this code, but both can be coded when both are documented.

-   personal history of infectious and parasitic diseases (Z86.1-)

## Related codes

-   [`Z20.09` Contact with and (suspected) exposure to other intestinal infectious diseases ICD-10-CM](https://billingbrief.com/icd10/z20.09/)
-   [`Z20.1` Contact with and (suspected) exposure to tuberculosis ICD-10-CM](https://billingbrief.com/icd10/z20.1/)
-   [`Z20.2` Contact with and ICD-10-CM](https://billingbrief.com/icd10/z20.2/)
-   [`Z20.3` Contact with and (suspected) exposure to rabies ICD-10-CM](https://billingbrief.com/icd10/z20.3/)
-   [`Z20.5` Contact with and (suspected) exposure to viral hepatitis ICD-10-CM](https://billingbrief.com/icd10/z20.5/)
-   [`Z20.6` Contact with and (suspected) exposure to human immunodeficiency virus \[HIV\] ICD-10-CM](https://billingbrief.com/icd10/z20.6/)
-   [`Z20.7` Contact with and (suspected) exposure to pediculosis, acariasis and other infestations ICD-10-CM](https://billingbrief.com/icd10/z20.7/)
-   [`Z20.810` Contact with and (suspected) exposure to anthrax ICD-10-CM](https://billingbrief.com/icd10/z20.810/)

## Common questions

### Is Z20.4 a billable code?

Yes. Z20.4 is a billable ICD-10-CM code in the ICD-10-CM FY2027 (effective October 1, 2026) code set.

## From the source

Official description from [CMS](https://www.cms.gov/medicare/coding-billing/icd-10-codes).
ICD-10-CM FY2027 (effective October 1, 2026).

Code set

ICD-10-CM

Category

Z20 Contact with and (suspected) exposure to communicable diseases

Chapter

Factors influencing health status and contact with health services

Billable

Yes

Educational reference only. Not medical, legal, or billing advice. Always check the current official code set and payer policy before you bill. [About BillingBrief and our sources](https://billingbrief.com/about/).