Z3A — Weeks of gestation
Not billable
Is Z3A billable?
No — Z3A is a non-billable header code. Z3A groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 38 billable codes beneath Z3A.
Billable codes under this header
- 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 at a glance
| Code | Z3A |
|---|---|
| Description | Weeks of gestation |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Code first
The underlying condition below must be sequenced before Z3A. Z3A describes a manifestation and cannot be the principal or first-listed diagnosis.
Note
- Codes from category Z3A are for use, only on the maternal record, to indicate the weeks of gestation of the pregnancy, if known.
What codes fall under Z3A? (5)
- Z3A.0Weeks of gestation of pregnancy, unspecified or less than 10 weeksnot billable
- Z3A.1Weeks of gestation of pregnancy, weeks 10-19not billable
- Z3A.2Weeks of gestation of pregnancy, weeks 20-29not billable
- Z3A.3Weeks of gestation of pregnancy, weeks 30-39not billable
- Z3A.4Weeks of gestation of pregnancy, weeks 40 or greaternot billable
How long has Z3A existed?
Z3A has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.