2027 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 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

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
Short Description
Encounter for antenatal screening of mother
Same as the full description in the CMS dataset.
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

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to Z36: its own notes plus those printed at Chapter 21. A note printed at a category, block or chapter applies to every code under it.

Includes

Further defines, or gives examples of, the content of the category.

  • 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.

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

  • 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

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

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

Notes

General instructions on how these codes are used.

From Chapter 21 (Z00-Z99) Factors influencing health status and contact with health services applies to 1,425 codes
  • Z codes represent reasons for encounters. A corresponding procedure code must accompany a Z code if a procedure is performed. Categories Z00-Z99 are provided for occasions when circumstances other than a disease, injury or external cause classifiable to categories A00-Y89 are recorded as 'diagnoses' or 'problems'. This can arise in two main ways:
  • (a) When a person who may or may not be sick encounters the health services for some specific purpose, such as to receive limited care or service for a current condition, to donate an organ or tissue, to receive prophylactic vaccination (immunization), or to discuss a problem which is in itself not a disease or injury.
  • (b) When some circumstance or problem is present which influences the person's health status but is not in itself a current illness or injury.

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name Z36, its category, or a range that includes it.

Excludes2 1

These codes carry an Excludes2 note naming Z36: its condition is not part of those codes, and both may be reported when the patient has both.

  • Block Z00-Z13 Persons encountering health services for examinations
    examinations related to pregnancy and reproduction (Z30-Z36, Z39.-) names Z30-Z36, which includes this code

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 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About Z36Overview

What is the ICD-10 code for encounter for antenatal screening of mother?

Z36 is the ICD-10-CM category for encounter for antenatal screening of mother, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

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.

Can Z36 be reported with a code from Z03.7?

Not as a rule. The Excludes1 note on Z36 lists "encounter for suspected maternal and fetal conditions ruled out (Z03.7-)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).