---
title: "ICD-10-CM Z11.9: Encounter for screening for infectious… | BillingBrief"
description: "ICD-10-CM code Z11.9: Encounter for screening for infectious and parasitic diseases, unspecified. Category, related codes, and the official source, in plain…"
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# Z11.9 Encounter for screening for infectious and parasitic diseases, unspecified

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

**Official ICD-10-CM description:** Encounter for screening for infectious and parasitic diseases, unspecified

## Coding notes

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

### Note

-   Nonspecific abnormal findings disclosed at the time of these examinations are classified to categories R70-R94.

### Excludes1

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

-   encounter for diagnostic examination-code to sign or symptom

### Excludes2

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

-   examinations related to pregnancy and reproduction (Z30-Z36, Z39.-)

## Related codes

-   [`Z11.3` Encounter for screening for infections with a predominantly sexual mode of transmission ICD-10-CM](https://billingbrief.com/icd10/z11.3/)
-   [`Z11.4` Encounter for screening for human immunodeficiency virus \[HIV\] ICD-10-CM](https://billingbrief.com/icd10/z11.4/)
-   [`Z11.51` Encounter for screening for human papillomavirus (HPV) ICD-10-CM](https://billingbrief.com/icd10/z11.51/)
-   [`Z11.52` Encounter for screening for COVID-19 ICD-10-CM](https://billingbrief.com/icd10/z11.52/)
-   [`Z11.59` Encounter for screening for other viral diseases ICD-10-CM](https://billingbrief.com/icd10/z11.59/)
-   [`Z11.6` Encounter for screening for other protozoal diseases and helminthiases ICD-10-CM](https://billingbrief.com/icd10/z11.6/)
-   [`Z11.7` Encounter for testing for latent tuberculosis infection ICD-10-CM](https://billingbrief.com/icd10/z11.7/)
-   [`Z11.8` Encounter for screening for other infectious and parasitic diseases ICD-10-CM](https://billingbrief.com/icd10/z11.8/)

## Common questions

### Is Z11.9 a billable code?

Yes. Z11.9 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

Z11 Encounter for screening for infectious and parasitic 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/).