O02.1 vs O36.4XX3
O02.1 (Missed abortion) compared with O36.4XX3 (Maternal care for intrauterine death, fetus 3), 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. O02.1 carries an Excludes1 note covering O36.4XX3: “fetal death (intrauterine) (late) (O36.4)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
No — do not report together. O02.1 carries an Excludes1 note covering O36.4XX3: “missed delivery (O36.4)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
No — do not report together. O36.4XX3 carries an Excludes1 note covering O02.1: “missed abortion (O02.1)”
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
| O02.1Missed abortion | O36.4XX3Maternal care for intrauterine death, fetus 3 | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | O00-O9A — Pregnancy, Childbirth and the Puerperium (O00-O9A) | O00-O9A — Pregnancy, Childbirth and the Puerperium (O00-O9A) |
| Definition | Missed abortion is a billable ICD-10-CM diagnosis code (O02.1). | Maternal care for intrauterine death, fetus 3 is a billable ICD-10-CM diagnosis code (O36.43). |
| 7th character | — | One of the following 7th characters is to be assigned to each code under category O36. 7th character 0 is for single gestations and multiple gestations where the fetus is unspecified. 7th characters 1 through 9 are for cases of multiple gestations to identify the fetus for which the code applies. The appropriate code from category O30, Multiple gestation, must also be assigned when assigning a code from category O36 that has a 7th character of 1 through 9. |
| Includes | Early fetal death, before completion of 20 weeks of gestation, with retention of dead fetus | the listed conditions in the fetus as a reason for hospitalization or other obstetric care of the mother, or for termination of pregnancy Maternal care for intrauterine fetal death NOS Maternal care for intrauterine fetal death after completion of 20 weeks of gestation Maternal care for late fetal death |
| 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