2026 ICD-10-CM Diagnosis Code Z11.7Encounter for testing for latent tuberculosis infection

ICD-10-CM Codes›Z00–Z99›Z00-Z13›Z11

ICD-10-CM Z11.7
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

Z11.7 is a billable ICD-10-CM diagnosis code for encounter for testing for latent tuberculosis infection. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). The code is not accepted as a principal diagnosis by the Medicare Code Editor and exempt from POA reporting. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Exposure, encounters, screening or contact with infectious disease.

Code Identity

ICD-10-CM Code
Z11.7
Billable Status
Yes — Valid for Submission
Code Describes
Encounter for testing for latent tuberculosis infection
Short Description
Encounter for testing for latent tuberculosis infection
Same as the full description in the CMS dataset.
Parent Code
Z11
Encounter for screening for infectious and parasitic diseases

Code Classification

ChapterZ00–Z99Factors influencing health status and contact with health services
SectionZ00-Z13Persons encountering health services for examinations
CategoryZ11Encounter for screening for infectious and parasitic diseases
This CodeZ11.7Encounter for testing for latent tuberculosis infection

Code EditsBilling

Medicare Code Editor checks that affect claim validity for Z11.7.

Unacceptable principal diagnosis
There are selected codes that describe a circumstance which influences an individual's health status but not a current illness or injury, or codes that are not specific manifestations but may be due to an underlying cause. These codes are considered unacceptable as a principal diagnosis.

Present on Admission (POA)Billing

Z11.7 is exempt from POA reporting on inpatient claims to general acute care hospitals. Review other POA exempt codes.

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Screening(for)
      • tuberculosis, respiratory
        • latent

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR FAC016
Exposure, encounters, screening or contact with infectious disease
Default principal diagnosis: inpatient No · outpatient Yes

Patient EducationClinical

Tuberculosis

Tuberculosis (TB) is a bacterial disease that usually attacks the lungs. But it can also attack other parts of the body, including the kidneys, spine, and brain.

The full article covers:

  • What is tuberculosis (TB)?
  • What causes tuberculosis (TB)?
  • Who is more likely to get infected with tuberculosis (TB) germs?
  • Who is more likely to develop TB disease?
  • What are the symptoms of tuberculosis (TB)?
  • How is tuberculosis (TB) diagnosed?
  • What is the treatment for tuberculosis (TB)?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code History & ChangesHistory

Replacement Z11.7 replaces the following previously assigned code(s):

  • Z11.1 - Encounter for screening for respiratory tuberculosis
FY 2020AddedAdded to the ICD-10-CM code setEffective October 1, 2019.
FY 2021–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About Z11.7Overview

Is Z11.7 a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report encounter for testing for latent tuberculosis infection on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

Can Z11.7 be a principal diagnosis?

No. The Medicare Code Editor rejects this code as a principal diagnosis because encounter for testing for latent tuberculosis infection describes a circumstance that influences health status rather than a current illness. Report it as a secondary diagnosis.

Is Z11.7 exempt from POA reporting?

Yes. CMS lists this code among those exempt from present on admission reporting, so hospitals do not assign a POA indicator for encounter for testing for latent tuberculosis infection on inpatient claims.