O03.9 vs O22
O03.9 and O22 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 O22
abortion NOS (O03.9)
O03.9
Complete or unspecified spontaneous abortion without complication
BillableUnspecified
- Chapter 15
- Pregnancy, childbirth and the puerperium
- Section
- O00-O08
Use when the record says
- Miscarriage NOS
- Spontaneous abortion NOS
Indexed under
- Abortion (complete) (spontaneous)
- Miscarriage
- Threatened › abortion › with subsequent abortion
O22
Venous complications and hemorrhoids in pregnancy
Not billable
- Chapter 15
- Pregnancy, childbirth and the puerperium
- Section
- O20-O29
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