2021 ICD-10-CM Diagnosis Code Z3A.4

Weeks of gestation of pregnancy, weeks 40 or greater

    2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
  • Z3A.4 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2021 edition of ICD-10-CM Z3A.4 became effective on October 1, 2020.
  • This is the American ICD-10-CM version of Z3A.4 - other international versions of ICD-10 Z3A.4 may differ.
The following code(s) above Z3A.4 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to Z3A.4:
  • Z00-Z99
    2021 ICD-10-CM Range Z00-Z99

    Factors influencing health status and contact with health services

    • 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.
    Factors influencing health status and contact with health services
  • Z3A
    ICD-10-CM Diagnosis Code Z3A

    Weeks of gestation

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Code First
    • complications of pregnancy, childbirth and the puerperium (O09-O9A)
    • Codes from category Z3A are for use, only on the maternal record, to indicate the weeks of gestation of the pregnancy, if known.
    Weeks of gestation
Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
ICD-10-CM Codes Adjacent To Z3A.4
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.4 Weeks of gestation of pregnancy, weeks 40 or greater
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
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

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.