O20 vs O46
O20 (Hemorrhage in early pregnancy) compared with O46 (Antepartum hemorrhage, not elsewhere classified), 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. O46 carries an Excludes1 note covering O20: “hemorrhage in early pregnancy (O20.-)”
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
| O20Hemorrhage in early pregnancy | O46Antepartum hemorrhage, not elsewhere classified | |
|---|---|---|
| Billing status | Non-billable header | Non-billable header |
| Classification | O00-O9A — Pregnancy, Childbirth and the Puerperium (O00-O9A) | O00-O9A — Pregnancy, Childbirth and the Puerperium (O00-O9A) |
| Definition | Hemorrhage in early pregnancy is a non-billable ICD-10-CM category code (O20). | Antepartum hemorrhage, not elsewhere classified is a non-billable ICD-10-CM category code (O46). |
| Includes | hemorrhage before completion of 20 weeks gestation | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources