O00 vs Z34
O00 (Ectopic pregnancy) compared with Z34 (Encounter for supervision of normal pregnancy), 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. Z34 carries an Excludes1 note covering O00: “any complication of pregnancy (O00-O9A)”
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
| O00Ectopic pregnancy | Z34Encounter for supervision of normal pregnancy | |
|---|---|---|
| Billing status | Non-billable header | Non-billable header |
| Classification | O00-O9A — Pregnancy, Childbirth and the Puerperium (O00-O9A) | Z00-Z99 — Factors Influencing Health Status and Contact with Health Services (Z00-Z99) |
| Definition | Ectopic pregnancy is a non-billable ICD-10-CM category code (O00). | Encounter for supervision of normal pregnancy is a non-billable ICD-10-CM category code (Z34). |
| Includes | ruptured ectopic pregnancy | — |
| Use additional code | code from category O08 to identify any associated complication | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources