Version 2024

2024 ICD-10-CM Diagnosis Code Z3A

Weeks of gestation

ICD-10-CM Code:
Z3A
ICD-10 Code for:
Weeks of gestation
Is Billable?
Not Valid for Submission
Code Navigator:

Code Classification

  • Factors influencing health status and contact with health services
    (Z00–Z99)
    • Persons encountering health services in circumstances related to reproduction
      (Z30-Z39)
      • Weeks of gestation
        (Z3A)

Z3A is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of weeks of gestation. The code is not specific and is NOT valid for the year 2024 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

Specific Coding Applicable to Weeks of gestation

Non-specific codes like Z3A require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10-CM codes with a higher level of specificity when coding for weeks of gestation:

  • Z3A.0 for Weeks of gestation of pregnancy, unspecified or less than 10 weeks - NON-BILLABLE CODE

  • Use Z3A.00 for Weeks of gestation of pregnancy not specified - BILLABLE CODE

  • Use Z3A.01 for Less than 8 weeks gestation of pregnancy - BILLABLE CODE

  • Use Z3A.08 for 8 weeks gestation of pregnancy - BILLABLE CODE

  • Use Z3A.09 for 9 weeks gestation of pregnancy - BILLABLE CODE

  • Z3A.1 for Weeks of gestation of pregnancy, weeks 10-19 - NON-BILLABLE CODE

  • Use Z3A.10 for 10 weeks gestation of pregnancy - BILLABLE CODE

  • Use Z3A.11 for 11 weeks gestation of pregnancy - BILLABLE CODE

  • Use Z3A.12 for 12 weeks gestation of pregnancy - BILLABLE CODE

  • Use Z3A.13 for 13 weeks gestation of pregnancy - BILLABLE CODE

  • Use Z3A.14 for 14 weeks gestation of pregnancy - BILLABLE CODE

  • Use Z3A.15 for 15 weeks gestation of pregnancy - BILLABLE CODE

  • Use Z3A.16 for 16 weeks gestation of pregnancy - BILLABLE CODE

  • Use Z3A.17 for 17 weeks gestation of pregnancy - BILLABLE CODE

  • Use Z3A.18 for 18 weeks gestation of pregnancy - BILLABLE CODE

  • Use Z3A.19 for 19 weeks gestation of pregnancy - BILLABLE CODE

  • Z3A.2 for Weeks of gestation of pregnancy, weeks 20-29 - NON-BILLABLE CODE

  • Use Z3A.20 for 20 weeks gestation of pregnancy - BILLABLE CODE

  • Use Z3A.21 for 21 weeks gestation of pregnancy - BILLABLE CODE

  • Use Z3A.22 for 22 weeks gestation of pregnancy - BILLABLE CODE

  • Use Z3A.23 for 23 weeks gestation of pregnancy - BILLABLE CODE

  • Use Z3A.24 for 24 weeks gestation of pregnancy - BILLABLE CODE

  • Use Z3A.25 for 25 weeks gestation of pregnancy - BILLABLE CODE

  • Use Z3A.26 for 26 weeks gestation of pregnancy - BILLABLE CODE

  • Use Z3A.27 for 27 weeks gestation of pregnancy - BILLABLE CODE

  • Use Z3A.28 for 28 weeks gestation of pregnancy - BILLABLE CODE

  • Use Z3A.29 for 29 weeks gestation of pregnancy - BILLABLE CODE

  • Z3A.3 for Weeks of gestation of pregnancy, weeks 30-39 - NON-BILLABLE CODE

  • Use Z3A.30 for 30 weeks gestation of pregnancy - BILLABLE CODE

  • Use Z3A.31 for 31 weeks gestation of pregnancy - BILLABLE CODE

  • Use Z3A.32 for 32 weeks gestation of pregnancy - BILLABLE CODE

  • Use Z3A.33 for 33 weeks gestation of pregnancy - BILLABLE CODE

  • Use Z3A.34 for 34 weeks gestation of pregnancy - BILLABLE CODE

  • Use Z3A.35 for 35 weeks gestation of pregnancy - BILLABLE CODE

  • Use Z3A.36 for 36 weeks gestation of pregnancy - BILLABLE CODE

  • Use Z3A.37 for 37 weeks gestation of pregnancy - BILLABLE CODE

  • Use Z3A.38 for 38 weeks gestation of pregnancy - BILLABLE CODE

  • Use Z3A.39 for 39 weeks gestation of pregnancy - BILLABLE CODE

  • Z3A.4 for Weeks of gestation of pregnancy, weeks 40 or greater - NON-BILLABLE CODE

  • Use Z3A.40 for 40 weeks gestation of pregnancy - BILLABLE CODE

  • Use Z3A.41 for 41 weeks gestation of pregnancy - BILLABLE CODE

  • Use Z3A.42 for 42 weeks gestation of pregnancy - BILLABLE CODE

  • Use Z3A.49 for Greater than 42 weeks gestation of pregnancy - BILLABLE CODE

Tabular List of Diseases and Injuries

The following annotation back-references are applicable to this diagnosis code. The Tabular List of Diseases and Injuries is a list of ICD-10-CM codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more.


Code First

Code First
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists, there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation.
  • obstetric condition or encounter for delivery O09 O60 O80 O82

  • Codes from category Z3A are for use, only on the maternal record, to indicate the weeks of gestation of the pregnancy, if known.

Patient Education


Pregnancy

You're going to have a baby! It's an exciting time, but it can also feel a bit overwhelming. You may have a lot of questions, including what you can do to give your baby a healthy start. To keep you and your baby healthy during pregnancy, it is important to:

  • Have regular visits with your health care provider. These prenatal care visits help make sure that you and your baby are healthy. And if there are any health problems, your provider can find them early. Getting treatment right away can cure many problems and prevent others.
  • Eat healthy and drink plenty of water. Good nutrition during pregnancy includes eating a variety of
    • Fruits
    • Vegetables
    • Whole grains
    • Lean meats or other protein sources
    • Low-fat dairy products
  • Take prenatal vitamins. Pregnant women need higher amounts of certain vitamins and minerals, such as folic acid and iron.
  • Be careful with medicines. Always check with your health care provider before you start or stop any medicine. This includes over-the-counter medicines and dietary or herbal supplements.
  • Stay active. Physical activity can help you stay strong, feel and sleep better, and prepare your body for birth. Check with your provider about which types of activities are right for you.
  • Avoid substances that could hurt your baby, such as alcohol, drugs, and tobacco.

Your body will keep changing as your baby grows. It can be hard to know whether a new symptom is normal or could be a sign of a problem. Check with your health care provider if something is bothering or worrying you.


[Learn More in MedlinePlus]

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.