All ICD10 Codes
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.

All CodesBillable Only
Internal Codes
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  • Z38.69—

    Other multiple liveborn infant, delivered by cesarean

  • Z38.7—

    Other multiple liveborn infant, born outside hospital

  • Z38.8—

    Other multiple liveborn infant, unspecified as to place of birth

  • Z39.0—

    Encounter for care and examination of mother immediately after delivery

  • Z39.1—

    Encounter for care and examination of lactating mother

  • Z39.2—

    Encounter for routine postpartum follow-up

  • Z3A.00—

    Weeks of gestation of pregnancy not specified

  • Z3A.01—

    Less than 8 weeks gestation of pregnancy

  • Z3A.08—

    8 weeks gestation of pregnancy

  • Z3A.09—

    9 weeks gestation of pregnancy

  • Z3A.10—

    10 weeks gestation of pregnancy

  • Z3A.11—

    11 weeks gestation of pregnancy

  • Z3A.12—

    12 weeks gestation of pregnancy

  • Z3A.13—

    13 weeks gestation of pregnancy

  • Z3A.14—

    14 weeks gestation of pregnancy

  • Z3A.15—

    15 weeks gestation of pregnancy

  • Z3A.16—

    16 weeks gestation of pregnancy

  • Z3A.17—

    17 weeks gestation of pregnancy

  • Z3A.18—

    18 weeks gestation of pregnancy

  • Z3A.19—

    19 weeks gestation of pregnancy

  • Z3A.20—

    20 weeks gestation of pregnancy

  • Z3A.21—

    21 weeks gestation of pregnancy

  • Z3A.22—

    22 weeks gestation of pregnancy

  • Z3A.23—

    23 weeks gestation of pregnancy

  • Z3A.24—

    24 weeks gestation of pregnancy

  • Z3A.25—

    25 weeks gestation of pregnancy

  • Z3A.26—

    26 weeks gestation of pregnancy

  • Z3A.27—

    27 weeks gestation of pregnancy

  • Z3A.28—

    28 weeks gestation of pregnancy

  • Z3A.29—

    29 weeks gestation of pregnancy

  • Z3A.30—

    30 weeks gestation of pregnancy

  • Z3A.31—

    31 weeks gestation of pregnancy

  • Z3A.32—

    32 weeks gestation of pregnancy

  • Z3A.33—

    33 weeks gestation of pregnancy

  • Z3A.34—

    34 weeks gestation of pregnancy

  • Z3A.35—

    35 weeks gestation of pregnancy

  • Z3A.36—

    36 weeks gestation of pregnancy

  • Z3A.37—

    37 weeks gestation of pregnancy

  • Z3A.38—

    38 weeks gestation of pregnancy

  • Z3A.39—

    39 weeks gestation of pregnancy

  • Z3A.40—

    40 weeks gestation of pregnancy

  • Z3A.41—

    41 weeks gestation of pregnancy

  • Z3A.42—

    42 weeks gestation of pregnancy

  • Z3A.49—

    Greater than 42 weeks gestation of pregnancy

  • Z40.00—

    Encounter for prophylactic removal of unspecified organ

  • Z40.01—

    Encounter for prophylactic removal of breast

  • Z40.02—

    Encounter for prophylactic removal of ovary(s)

  • Z40.03—

    Encounter for prophylactic removal of fallopian tube(s)

  • Z40.09—

    Encounter for prophylactic removal of other organ

  • Z40.81—

    Encounter for prophylactic surgery for removal of ovary(s) for persons without known genetic/familial risk factors

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