2026 ICD-10-CM Diagnosis Code Z36Encounter for antenatal screening of mother

ICD-10-CM Codes›Z00–Z99›Z30-Z39›Z36

ICD-10-CM Z36
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

Z36 is a non-billable ICD-10-CM category code for encounter for antenatal screening of mother, so it cannot be submitted on claims. Use a more specific code from this category instead, such as Z36.0, Z36.1, Z36.2, and Z36.3. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Antenatal screening.

Code Identity

ICD-10-CM Code
Z36
Billable Status
No — Non-Billable Category
Code Describes
Encounter for antenatal screening of mother
Chapter
Z30-Z39
Persons encountering health services in circumstances related to reproduction

Code Classification

ChapterZ00–Z99Factors influencing health status and contact with health services
SectionZ30-Z39Persons encountering health services in circumstances related to reproduction
CategoryZ36Encounter for antenatal screening of mother
This CodeZ36Encounter for antenatal screening of mother

Specific Coding for Encounter for antenatal screening of motherOverview

Non-specific codes like Z36 require more characters. Use one of these billable codes instead:

  • Use Z36.0 for Encounter for antenatal screening for chromosomal anomalies

  • Use Z36.1 for Encounter for antenatal screening for raised alphafetoprotein level

  • Use Z36.2 for Encounter for other antenatal screening follow-up

  • Use Z36.3 for Encounter for antenatal screening for malformations

  • Use Z36.4 for Encounter for antenatal screening for fetal growth retardation

  • Use Z36.5 for Encounter for antenatal screening for isoimmunization

  • Z36.8 for Encounter for other antenatal screening

  • Use Z36.81 for Encounter for antenatal screening for hydrops fetalis

  • Use Z36.82 for Encounter for antenatal screening for nuchal translucency

  • Use Z36.83 for Encounter for fetal screening for congenital cardiac abnormalities

  • Use Z36.84 for Encounter for antenatal screening for fetal lung maturity

  • Use Z36.85 for Encounter for antenatal screening for Streptococcus B

  • Use Z36.86 for Encounter for antenatal screening for cervical length

  • Use Z36.87 for Encounter for antenatal screening for uncertain dates

  • Use Z36.88 for Encounter for antenatal screening for fetal macrosomia

  • Use Z36.89 for Encounter for other specified antenatal screening

  • Use Z36.8A for Encounter for antenatal screening for other genetic defects

  • Use Z36.9 for Encounter for antenatal screening, unspecified

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Includes

  • Encounter for placental sample (taken vaginally)
  • 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.

Type 1 Excludes

  • diagnostic examination- code to sign or symptom
  • encounter for suspected maternal and fetal conditions ruled out Z03.7
  • suspected fetal condition affecting management of pregnancy - code to condition in Chapter 15

Type 2 Excludes

  • abnormal findings on antenatal screening of mother O28
  • genetic counseling and testing Z31.43 Z31.5
  • routine prenatal care Z34

Clinical ClassificationClinical

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

CCSR PRG001
Antenatal screening
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Prenatal Testing

Prenatal testing provides information about the health of your fetus before the baby is born. Some routine tests during pregnancy also check your health. The prenatal test may use a sample of your blood, urine or fluid from your vagina, cervix, or rectum.

The full article covers:

  • What is prenatal testing?
  • What is prenatal testing used to diagnose?
  • What are the two types of prenatal tests?

Read the full article at MedlinePlus

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

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About Z36Overview

Is Z36 (Encounter for antenatal screening of mother) a billable code?

No. This is a category header that groups the codes for encounter for antenatal screening of mother, and headers cannot be submitted on claims. Claims for encounter for antenatal screening of mother need a more specific code from this category, such as Z36.0, Z36.1, and Z36.2.