FY2024
Effective from
- Inherited rules changed
Conjoined twin pregnancy
Category — select a more specific code
CDC/NCHS · FY2024code, if applicable, from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known.
supervision of normal pregnancy (Z34.-)
any complications specific to multiple gestation
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 · FY2024
Effective from
Conjoined twin pregnancy
Category — select a more specific code
CDC/NCHS · FY2024| All editions | Effective from | Code history |
|---|---|---|
| FY2016 | 2015-10-01 | First observed |
| FY2017 | 2016-10-01 | Inherited rules changed |
| FY2018 | 2017-10-01 | No tabular change |
| FY2019 | 2018-10-01 | Inherited rules changed |
| 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 | No tabular change |
| 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 | Inherited rules changed |
| FY2024 · 04-01 | 2024-04-01 | No tabular change |
| FY2025 | 2024-10-01 | No tabular change |
| FY2025 · 04-01 | 2025-04-01 | No tabular change |
| FY2026 | 2025-10-01 | No tabular change |
| FY2026 · April | 2026-04-01 | No tabular change |
| FY2027 | 2026-10-01 | No tabular change |
The official Tabular List has no additional instructions at this code level.
Review the instructions inherited from its parent categories below. Inherited instructions ↓
supervision of normal pregnancy (Z34.-)
code, if applicable, from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known.
any complications specific to multiple gestation
Other entries in the same category; these are not automatic substitutes.
| Code | Description | Category · further specificity required |
|---|---|---|
| O30.00 | Twin pregnancy, unspecified number of placenta and unspecified number of amniotic sacs | Category · further specificity required |
| O30.01 | Twin pregnancy, monochorionic/monoamniotic | Category · further specificity required |
| O30.03 | Twin pregnancy, monochorionic/diamniotic | Category · further specificity required |
| O30.04 | Twin pregnancy, dichorionic/diamniotic | Category · further specificity required |
| O30.09 | Twin pregnancy, unable to determine number of placenta and number of amniotic sacs | Category · further specificity required |
Official titles and instructions are preserved in their source language. Official sources ↗
Excludes 1 · conjoined twins (O30.02-)