Is ICD-10-CM code Z33 billable?

No, Z33 (Pregnant state) 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 Z33 belong to?

Z33 belongs to Chapter 21 of the ICD-10-CM tabular list: Z00–Z99 (Factors Influencing Health Status and Contact with Health Services).

Z33Not billable, use a more specific code below

Pregnant state

In Persons encountering health services in circumstances related to reproduction (Z30-Z39), chapter 21: Factors Influencing Health Status and Contact with Health Services

3 billable codes under Z33: none are a CC or MCC; none map to an HCC.

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 Z33

Z33 can't be used on a claim. Pick a billable code below; grey headings group them.

Z33 MS-DRGs

As the principal diagnosis, the billable codes under Z33 group to MS-DRG 951, 770, or 779 (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.

DRG 951 Other Factors Influencing Health Status (2 of 3 codes)
DRG 770 Abortion with D&C, Aspiration Curettage or Hysterotomy (1 of 3 codes)
DRG 779 Abortion without D&C (1 of 3 codes)

About the condition

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

Pregnancy

You're going to have a baby! It's an exciting time, but it can also feel a bit overwhelming. You may have a lot of questions, including what you can do to give your baby a healthy start. Taking care of your health while you're pregnant will help your fetus develop into a healthy baby. To do that, it's important to:

Code history

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