DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

Z36 Encounter for antenatal screening of mother

  • Header · not billable

Z36 is not billable. The category heads 17 billable codes in FY2027, grouped under 8 subdivisions.

Index → code

  • Prenatalscreening of mother → Z36.9
  • Screening (for)prenatal, of mother → Z36.9
  • Screening (for)antenatal, of mother → Z36.9

Where it sits

  1. Chapter 21 Factors influencing health status and contact with health services (Z00-Z99)
  2. Z30-Z39 Persons encountering health services in circumstances related to reproduction (Z30-Z39)
  3. Z36 Encounter for antenatal screening of mother
Billable codes
17
Subdivisions
8
CC / MCC codes
0 / 0
HCC V28 codes
0
New FY2027
0
Index entries
33

Codes in Z36

  1. Z36.0
    Encounter for antenatal screening for chromosomal anomalies
    BillableExempt
    Inclusion terms 5

    Inclusion terms

    • Encounter for antenatal screening for Down syndrome
    • Encounter for antenatal screening for fetal aneuploidy
    • Encounter for antenatal screening for Patau syndrome
    • Encounter for antenatal screening for Trisomy 13
    • Encounter for antenatal screening for Trisomy 21
  2. Z36.1
    Encounter for antenatal screening for raised alphafetoprotein level
    BillableExempt
    Inclusion terms 1

    Inclusion terms

    • Encounter for antenatal screening for elevated maternal serum alphafetoprotein level
  3. Z36.2
    Encounter for other antenatal screening follow-up
    BillableExempt
    Inclusion terms 1

    Inclusion terms

    • Non-visualized anatomy on a previous scan
  4. Z36.3
    Encounter for antenatal screening for malformations
    BillableExempt
    Inclusion terms 1

    Inclusion terms

    • Screening for a suspected anomaly
  5. Z36.4
    Encounter for antenatal screening for fetal growth retardation
    BillableExempt
    Inclusion terms 1

    Inclusion terms

    • Intrauterine growth restriction (IUGR)/small-for-dates
  6. Z36.5
    Encounter for antenatal screening for isoimmunization
    BillableExempt
  7. Z36.8
    Encounter for other antenatal screening
    Header
  8. Z36.81
    Encounter for antenatal screening for hydrops fetalis
    BillableExempt
  9. Z36.82
    Encounter for antenatal screening for nuchal translucency
    BillableExempt
  10. Z36.83
    Encounter for fetal screening for congenital cardiac abnormalities
    BillableExempt
  11. Z36.84
    Encounter for antenatal screening for fetal lung maturity
    BillableExempt
  12. Z36.85
    Encounter for antenatal screening for Streptococcus B
    BillableExempt
  13. Z36.86
    Encounter for antenatal screening for cervical length
    BillableExempt
    Inclusion terms 1

    Inclusion terms

    • Screening for risk of pre-term labor
  14. Z36.87
    Encounter for antenatal screening for uncertain dates
    BillableExempt
  15. Z36.88
    Encounter for antenatal screening for fetal macrosomia
    BillableExempt
    Inclusion terms 1

    Inclusion terms

    • Screening for large-for-dates
  16. Z36.89
    Encounter for other specified antenatal screening
    BillableExempt
  17. Z36.8A
    Encounter for antenatal screening for other genetic defects
    BillableExempt
  18. Z36.9
    Encounter for antenatal screening, unspecified
    BillableExempt

Sources of each column.

Instructions

At Z36

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.

Excludes1

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

Excludes2

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

Notes that also apply

Chapter 21 instructions (Notes 3): printed on the chapter 21 page.

Index entries

  • Antenatalscreening (encounter for) of mother → Z36.9
  • Encounter (with health service) (for)antenatal screening → Z36.9
  • Encounter (with health service) (for)placental sample (taken vaginally) → Z36.9
  • Prenatalscreening of mother → Z36.9
  • Screening (for)antenatal, of mother → Z36.9
  • Screening (for)prenatal, of mother → Z36.9
  • Encounter (with health service) (for)antenatal screeningchromosomal anomalies → Z36.0
  • Encounter (with health service) (for)antenatal screeningDown syndrome → Z36.0
  • Encounter (with health service) (for)antenatal screeningfetal aneuploidy → Z36.0
  • Encounter (with health service) (for)antenatal screeningPatau syndrome → Z36.0
  • Encounter (with health service) (for)antenatal screeningTrisomy 13 → Z36.0
  • Encounter (with health service) (for)antenatal screeningTrisomy 21 → Z36.0
  • Encounter (with health service) (for)antenatal screeningelevated maternal serum alphafetoprotein level → Z36.1
  • Encounter (with health service) (for)antenatal screeningraised alphafetoprotein level → Z36.1
  • Encounter (with health service) (for)antenatal screeningnon-visualized anatomy on a previous scan → Z36.2
  • Encounter (with health service) (for)antenatal screeningspecified follow-up NEC → Z36.2
  • Encounter (with health service) (for)antenatal screeningmalformations → Z36.3
  • Encounter (with health service) (for)antenatal screeningsuspected anomaly → Z36.3
  • Encounter (with health service) (for)antenatal screeningfetal growth retardation → Z36.4
  • Encounter (with health service) (for)antenatal screeningintrauterine growth restriction (IUGR)/small-for-dates → Z36.4
  • Encounter (with health service) (for)antenatal screeningisoimmunization → Z36.5
  • Encounter (with health service) (for)antenatal screeninghydrops fetalis → Z36.81
  • Encounter (with health service) (for)antenatal screeningnuchal translucency → Z36.82
  • Encounter (with health service) (for)antenatal screeningcongenital cardiac abnormalities → Z36.83
  • Encounter (with health service) (for)antenatal screeningfetal lung maturity → Z36.84
  • Encounter (with health service) (for)antenatal screeningStreptococcus B → Z36.85
  • Encounter (with health service) (for)antenatal screeningcervical length → Z36.86
  • Encounter (with health service) (for)antenatal screeningrisk of pre-term labor → Z36.86
  • Encounter (with health service) (for)antenatal screeninguncertain dates → Z36.87
  • Encounter (with health service) (for)antenatal screeningfetal macrosomia → Z36.88
  • Encounter (with health service) (for)antenatal screeninglarge-for-dates → Z36.88
  • Encounter (with health service) (for)antenatal screeningspecified type NEC → Z36.89
  • Encounter (with health service) (for)antenatal screeningspecified genetic defects NEC → Z36.8A

NCHS Alphabetic Index. Index first, then the Tabular List.

Hierarchy