Z33.1 vs Z33.3
Z33.1 (Pregnant state, incidental) compared with Z33.3 (Pregnant state, gestational carrier), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.
Can these codes be reported together?
No — do not report together. Z33.1 carries an Excludes1 note covering Z33.3: “pregnant state, gestational carrier (Z33.3)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
Side by side
| Z33.1Pregnant state, incidental | Z33.3Pregnant state, gestational carrier | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | Z00-Z99 — Factors Influencing Health Status and Contact with Health Services (Z00-Z99) | Z00-Z99 — Factors Influencing Health Status and Contact with Health Services (Z00-Z99) |
| Definition | Pregnant state, incidental is a billable ICD-10-CM diagnosis code (Z33.1). | Pregnant state, gestational carrier is a billable ICD-10-CM diagnosis code (Z33.3). |
| Includes | Pregnancy NOS Pregnant state NOS | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources