FY2025 · 04-01
Effective from
- Inherited rules changed
22 weeks gestation of pregnancy
Billable diagnosis code
CDC/NCHS · FY2025 · 04-01Coverage depends on the payer, service and applicable policy. A billable code does not guarantee payment.
For US diagnosis claims covered by HIPAA, ICD-10-CM is required from October 1, 2015.
Use the service date for outpatient/professional claims and the discharge date for hospital inpatient claims. Earlier encounters use ICD-9-CM; each individual code must also be valid for the applicable date.
Official coding guidelines → · CMS ↗First observed · 2015-10-01
Latest recorded change · FY2025 · 04-01
Effective from
22 weeks gestation of pregnancy
Billable diagnosis code
CDC/NCHS · FY2025 · 04-01| All editions | Effective from | Code history |
|---|---|---|
| FY2016 | 2015-10-01 | First observed |
| FY2017 | 2016-10-01 | Inherited rules changed |
| FY2018 | 2017-10-01 | Inherited rules changed |
| FY2019 | 2018-10-01 | No tabular change |
| FY2020 | 2019-10-01 | No tabular change |
| FY2020 · April | 2020-04-01 | No tabular change |
| FY2021 | 2020-10-01 | No tabular change |
| FY2021 · 01-01 | 2021-01-01 | No tabular change |
| FY2022 | 2021-10-01 | Inherited rules changed |
| FY2022 · 04-01 | 2022-04-01 | No tabular change |
| FY2023 | 2022-10-01 | No tabular change |
| FY2023 · 04-01 | 2023-04-01 | No tabular change |
| FY2024 | 2023-10-01 | No tabular change |
| FY2024 · 04-01 | 2024-04-01 | No tabular change |
| FY2025 | 2024-10-01 | No tabular change |
| FY2025 · 04-01 | 2025-04-01 | Inherited rules changed |
| FY2026 | 2025-10-01 | No tabular change |
| FY2026 · April | 2026-04-01 | No tabular change |
| FY2027 | 2026-10-01 | No tabular change |
Historical mapping only; not an automatic code substitution.
The official Tabular List has no additional instructions at this code level.
Review the instructions inherited from its parent categories below. Inherited instructions ↓
Codes from category Z3A are for use, only on the maternal record, to indicate the weeks of gestation of the pregnancy, if known.
Other entries in the same category; these are not automatic substitutes.
| Code | Description | Category · further specificity required |
|---|---|---|
| Z3A.20 | 20 weeks gestation of pregnancy | Billable / specific |
| Z3A.21 | 21 weeks gestation of pregnancy | Billable / specific |
| Z3A.23 | 23 weeks gestation of pregnancy | Billable / specific |
| Z3A.24 | 24 weeks gestation of pregnancy | Billable / specific |
| Z3A.25 | 25 weeks gestation of pregnancy | Billable / specific |
| Z3A.26 | 26 weeks gestation of pregnancy | Billable / specific |
| Z3A.27 | 27 weeks gestation of pregnancy | Billable / specific |
| Z3A.28 | 28 weeks gestation of pregnancy | Billable / specific |
| Z3A.29 | 29 weeks gestation of pregnancy | Billable / specific |
Official titles and instructions are preserved in their source language. Official sources ↗