N96 vs O26-
N96 and O26 are not coded together. ICD-10-CM declares them mutually exclusive with an Excludes1 note — the two conditions are not expected to occur together, so exactly one of them is normally correct for a given encounter. The Official Guidelines carve out one exception: if the two conditions are clearly unrelated to each other, both may be reported.
Recurrent pregnancy loss
- Chapter 14
- Diseases of the genitourinary system
- Section
- N80-N98
- Investigation or care in a nonpregnant woman with history of recurrent pregnancy loss
- Abortion › habitual or recurrent
- Loss › pregnancy, recurrent
- Abortion › habitual or recurrent › without current pregnancy
- Loss › pregnancy, recurrent › without current pregnancy
Maternal care for other conditions predominantly related to pregnancy
- Chapter 15
- Pregnancy, childbirth and the puerperium
- Section
- O20-O29
These two codes sit in different chapters of the Tabular List, which is usually the clearest signal that they describe different underlying processes rather than different degrees of the same one.
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