Chapter 21

Z00–Z99: Factors Influencing Health Status and Contact with Health Services

Factors Influencing Health Status and Contact with Health Services diagnostic classification updated for 2026.

Internal Codes
  • Z34.8

    Encounter for supervision of other normal pregnancy

  • Z34.80

    Encounter for supervision of other normal pregnancy, unspecified trimester

  • Z34.81

    Encounter for supervision of other normal pregnancy, first trimester

  • Z34.82

    Encounter for supervision of other normal pregnancy, second trimester

  • Z34.83

    Encounter for supervision of other normal pregnancy, third trimester

  • Z34.9

    Encounter for supervision of normal pregnancy, unspecified

  • Z34.90

    Encounter for supervision of normal pregnancy, unspecified, unspecified trimester

  • Z34.91

    Encounter for supervision of normal pregnancy, unspecified, first trimester

  • Z34.92

    Encounter for supervision of normal pregnancy, unspecified, second trimester

  • Z34.93

    Encounter for supervision of normal pregnancy, unspecified, third trimester

  • Z36

    Encounter for antenatal screening of mother

  • Z36.0

    Encounter for antenatal screening for chromosomal anomalies

  • Z36.1

    Encounter for antenatal screening for raised alphafetoprotein level

  • Z36.2

    Encounter for other antenatal screening follow-up

  • Z36.3

    Encounter for antenatal screening for malformations

  • Z36.4

    Encounter for antenatal screening for fetal growth retardation

  • Z36.5

    Encounter for antenatal screening for isoimmunization

  • Z36.8

    Encounter for other antenatal screening

  • Z36.81

    Encounter for antenatal screening for hydrops fetalis

  • Z36.82

    Encounter for antenatal screening for nuchal translucency

  • Z36.83

    Encounter for fetal screening for congenital cardiac abnormalities

  • Z36.84

    Encounter for antenatal screening for fetal lung maturity

  • Z36.85

    Encounter for antenatal screening for Streptococcus B

  • Z36.86

    Encounter for antenatal screening for cervical length

  • Z36.87

    Encounter for antenatal screening for uncertain dates

  • Z36.88

    Encounter for antenatal screening for fetal macrosomia

  • Z36.89

    Encounter for other specified antenatal screening

  • Z36.8A

    Encounter for antenatal screening for other genetic defects

  • Z36.9

    Encounter for antenatal screening, unspecified

  • Z37

    Outcome of delivery

  • Z37.0

    Single live birth

  • Z37.1

    Single stillbirth

  • Z37.2

    Twins, both liveborn

  • Z37.3

    Twins, one liveborn and one stillborn

  • Z37.4

    Twins, both stillborn

  • Z37.5

    Other multiple births, all liveborn

  • Z37.50

    Multiple births, unspecified, all liveborn

  • Z37.51

    Triplets, all liveborn

  • Z37.52

    Quadruplets, all liveborn

  • Z37.53

    Quintuplets, all liveborn

  • Z37.54

    Sextuplets, all liveborn

  • Z37.59

    Other multiple births, all liveborn

  • Z37.6

    Other multiple births, some liveborn

  • Z37.60

    Multiple births, unspecified, some liveborn

  • Z37.61

    Triplets, some liveborn

  • Z37.62

    Quadruplets, some liveborn

  • Z37.63

    Quintuplets, some liveborn

  • Z37.64

    Sextuplets, some liveborn

  • Z37.69

    Other multiple births, some liveborn

  • Z37.7

    Other multiple births, all stillborn

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