Is Z3A a billable code?
No. Z3A is a header code that groups 38 more specific codes. Use one of the billable codes listed on this page instead.
ICD-10-CM FY2027 diagnosis code
Z3A: Weeks of gestation
Header code: not billableValid for dates of service October 1, 2026 to September 30, 2027
Z3A groups related diagnoses under weeks of gestation. It cannot be used on a claim by itself. Choose the billable code below that matches the patient's record.
Billable codes under Z3A
- Z3A.00Weeks of gestation of pregnancy not specified
- Z3A.01Less than 8 weeks gestation of pregnancy
- Z3A.088 weeks gestation of pregnancy
- Z3A.099 weeks gestation of pregnancy
- Z3A.1010 weeks gestation of pregnancy
- Z3A.1111 weeks gestation of pregnancy
- Z3A.1212 weeks gestation of pregnancy
- Z3A.1313 weeks gestation of pregnancy
- Z3A.1414 weeks gestation of pregnancy
- Z3A.1515 weeks gestation of pregnancy
- Z3A.1616 weeks gestation of pregnancy
- Z3A.1717 weeks gestation of pregnancy
- Z3A.1818 weeks gestation of pregnancy
- Z3A.1919 weeks gestation of pregnancy
- Z3A.2020 weeks gestation of pregnancy
- Z3A.2121 weeks gestation of pregnancy
- Z3A.2222 weeks gestation of pregnancy
- Z3A.2323 weeks gestation of pregnancy
- Z3A.2424 weeks gestation of pregnancy
- Z3A.2525 weeks gestation of pregnancy
- Z3A.2626 weeks gestation of pregnancy
- Z3A.2727 weeks gestation of pregnancy
- Z3A.2828 weeks gestation of pregnancy
- Z3A.2929 weeks gestation of pregnancy
- Z3A.3030 weeks gestation of pregnancy
- Z3A.3131 weeks gestation of pregnancy
- Z3A.3232 weeks gestation of pregnancy
- Z3A.3333 weeks gestation of pregnancy
- Z3A.3434 weeks gestation of pregnancy
- Z3A.3535 weeks gestation of pregnancy
- Z3A.3636 weeks gestation of pregnancy
- Z3A.3737 weeks gestation of pregnancy
- Z3A.3838 weeks gestation of pregnancy
- Z3A.3939 weeks gestation of pregnancy
- Z3A.4040 weeks gestation of pregnancy
- Z3A.4141 weeks gestation of pregnancy
- Z3A.4242 weeks gestation of pregnancy
- Z3A.49Greater than 42 weeks gestation of pregnancy
Z3A questions
What does Z3A mean?
Z3A is the ICD-10-CM code for Weeks of gestation. It is in chapter 22, Factors influencing health status and contact with health services (Z00-Z99).
Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.