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    v1.0.28
    OpenPayerBilling CodesPersons encountering health services in circumstances related to reproductionICD-10-CM z36-antenatal-screening-of-mother
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    ICD-10-CM Code For Encounter For Antenatal Screening Of Mother: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group Z36 includes encounters for antenatal screening of the mother, covering routine prenatal tests and assessments performed to detect maternal or fetal conditions during pregnancy. These ICD-10-CM diagnosis codes are used to document preventive and surveillance services in pregnancy, capturing the context of screening rather than confirmed obstetric diagnoses. Accurate coding within the ICD-10-CM Z36 group supports proper claim adjudication and complete clinical documentation for prenatal care.

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    ICD-10-CM Z36: Encounter for antenatal screening of mother Overview

    The ICD-10-CM Z36 diagnosis group represents encounters for routine antenatal screening of pregnant women and covers tests and assessments aimed at identifying maternal or fetal conditions during pregnancy. These codes target prenatal care processes rather than confirmed disease, focusing on maternal and fetal health surveillance across obstetric services. Accurate coding supports appropriate documentation of preventive and screening services and is important for correct claim processing and reimbursement.

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    When to Use

    Use a code from this group when documenting a prenatal visit or encounter that is primarily for antenatal screening procedures or tests without a definitive diagnosis. These codes apply when the clinical purpose of the encounter is surveillance or screening of maternal or fetal conditions during pregnancy.

    ICD-10-CM Codes

    17 rows

    ICD-10-CM CodeDescription
    Z36.0Encounter for antenatal screening for chromosomal anomalies
    Z36.1Encounter for antenatal screening for raised alphafetoprotein level
    Z36.2Encounter for other antenatal screening follow-up
    Z36.3Encounter for antenatal screening for malformations
    Z36.4Encounter for antenatal screening for fetal growth retardation
    Z36.5Encounter for antenatal screening for isoimmunization
    Z36.81Encounter for antenatal screening for hydrops fetalis
    Z36.82Encounter for antenatal screening for nuchal translucency
    Z36.83Encounter for fetal screening for congenital cardiac abnormalities
    Z36.84Encounter for antenatal screening for fetal lung maturity
    Z36.85Encounter for antenatal screening for Streptococcus B
    Z36.86Encounter for antenatal screening for cervical length
    Z36.87Encounter for antenatal screening for uncertain dates
    Z36.88Encounter for antenatal screening for fetal macrosomia
    Z36.89Encounter for other specified antenatal screening
    Z36.8AEncounter for antenatal screening for other genetic defects
    Z36.9Encounter for antenatal screening, unspecified

    DRG Codes

    1 rows

    DRG CodeDescription
    951Other Factors Influencing Health Status

    Typical Clinical Scenarios

    • Pregnant woman in her first trimester presents for routine prenatal care seeking standard genetic and infectious disease screening (including blood type, rubella immunity, HIV, hepatitis B, and first-trimester aneuploidy screening). She is asymptomatic and there is no current complication of pregnancy; the visit is specifically for antenatal screening. Typical codes: Z36.0, Z36.1
    • Pregnant patient referred to a maternal-fetal medicine clinic for targeted prenatal testing because of advanced maternal age or abnormal ultrasound findings suggesting possible chromosomal anomaly; the visit is focused on counseling and performing diagnostic tests such as chorionic villus sampling or noninvasive prenatal testing. A code from this group is assigned to indicate the encounter is for antenatal screening related to fetal genetic assessment. Typical codes: Z36.2, Z36.81
    • Pregnant woman presents to an outpatient lab for repeat screening late in pregnancy for gestational infections (e.g., repeat HIV and Group B Streptococcus screening) due to new risk factors identified during pregnancy; there are no current signs of infection or obstetric complications, and the purpose of the visit is screening to guide peripartum management. Typical codes: Z36.83, Z36.85

    Related Codes

    Z30-ENCOUNTER-FOR-CONTRACEPTIVE-MANAGEMENT

    ICD-10-CM Code For Encounter For Contraceptive Management: Group Overview

    Z31-ENCOUNTER-FOR-PROCREATIVE-MANAGEMENT

    ICD-10-CM Code For Encounter For Procreative Management: Group Overview

    Z32-ENCOUNTER-FOR-PREGNANCY-TEST

    ICD-10-CM Code For Encounter For Pregnancy Test And Childbirth And Childcare Instruction: Group Overview

    Z33-PREGNANT-STATE

    ICD-10-CM Code For Pregnant State: Group Overview

    Z34-ENCOUNTER-FOR-SUPERVISION-OF-NORMAL-PREGNANCY

    ICD-10-CM Code For Encounter For Supervision Of Normal Pregnancy: Group Overview

    Z37-OUTCOME-OF-DELIVERY

    ICD-10-CM Code For Outcome Of Delivery: Group Overview

    Z38-LIVEBORN-INFANTS-PLACE-AND-DELIVERY

    ICD-10-CM Code For Liveborn Infants According To Place Of Birth And Type Of Delivery: Group Overview

    Z39-ENCOUNTER-FOR-MATERNAL-POSTPARTUM-CARE

    ICD-10-CM Code For Encounter For Maternal Postpartum Care And Examination: Group Overview

    Z3A-WEEKS-OF-GESTATION

    ICD-10-CM Code For Weeks Of Gestation: Group Overview

    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
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