O02.0 vs O02.1
O02.0 and O02.1 can never be reported together. ICD-10-CM declares them mutually exclusive with an Excludes1 note, meaning the two conditions cannot occur in the same patient — so exactly one of them is correct for any given encounter.
The official note, declared on O02.1
missed abortion with blighted ovum (O02.0)
O02.0
Blighted ovum and nonhydatidiform mole
Billable
- Chapter 15
- Pregnancy, childbirth and the puerperium
- Section
- O00-O08
Use when the record says
- Carneous mole
- Fleshy mole
- Intrauterine mole NOS
- Molar pregnancy NEC
- Pathological ovum
Indexed under
- Blighted ovum
- Breus' mole
- Carneous mole
- Fleshy mole
- Molar pregnancy
O02.1
Missed abortion
Billable
- Chapter 15
- Pregnancy, childbirth and the puerperium
- Section
- O00-O08
Use when the record says
- Early fetal death, before completion of 20 weeks of gestation, with retention of dead fetus
Indexed under
- Abortion › missed (complete) (spontaneous)
- Missed › abortion
- Dead › fetus, retained › early pregnancy
- Retention › products of conception › early pregnancy
- Delivery › complicated › by › intrauterine fetal death, early (childbirth) (labor)
Excludes1 is not always absolute: where two conditions covered by the note are genuinely unrelated, CMS guidance permits reporting both. Document the reasoning rather than assuming it. More on Excludes1 vs Excludes2 · FY2027