Is ICD-10-CM code Z11 billable?

No, Z11 (Encounter for screening for infectious and parasitic diseases) is a non-billable ICD-10-CM code. It must be coded to a more specific subcategory before it can be used for reimbursement.

What chapter does ICD-10-CM code Z11 belong to?

Z11 belongs to Chapter 21 of the ICD-10-CM tabular list: Z00–Z99 (Factors Influencing Health Status and Contact with Health Services).

Z11Not billable, use a more specific code below

Encounter for screening for infectious and parasitic diseases

In Persons encountering health services for examinations (Z00-Z13), chapter 21: Factors Influencing Health Status and Contact with Health Services

12 billable codes under Z11: none are a CC or MCC; none map to an HCC.

Instructional notes

Includes: conditions that are coded here

Screening is the testing for disease or disease precursors in asymptomatic individuals so that early detection and treatment can be provided for those who test positive for the disease.

Excludes1: not coded here, use a different code

encounter for diagnostic examination-code to sign or symptom

Also applies, from Persons encountering health services for examinations (Z00-Z13)

These notes sit on Z00-Z13 and apply to every code under it, including Z11.

Excludes2: not included here, code separately if applicable

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

Official coding guidelines

From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.

Covers when and how to use Z codes (Z00-Z99) for encounters and supplementary information, including contact, status, history, screening, aftercare, exams, and social determinants of health.

Use of Z Codes in Any Healthcare Setting (page 92)
Z Codes Indicate a Reason for an Encounter or Provide Additional Information about a Patient Encounter (page 93)
Categories of Z Codes (page 93)

Read Section I.C.21 (page 92)

All codes under Z11

Z11 can't be used on a claim. Pick a billable code below; grey headings group them.

Z11 MS-DRG

As the principal diagnosis, all 12 billable codes under Z11 group to MS-DRG 951 (v44.0).

DRG 951 Other Factors Influencing Health Status

Other codes that refer to Z11

Notes on these codes point to Z11.

Z00 Excludes2: special screening examinations (Z11-Z13)
Z01 Excludes2: screening examinations (Z11-Z13)

About the condition

Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.

Health Screening

Screenings are tests that look for diseases before you have symptoms. Screening tests can find diseases early, when they're easier to treat. You can get some screenings in your doctor's office. Others need special equipment, so you may need to go to a different office or clinic.

Code history

Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.