FY2027
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Excludes1 pair

E28.2 vs N83.2-

E28.2 and N83.2 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.

The official note, declared on N83.2
polycystic ovarian syndrome (E28.2)
E28.2

Polycystic ovarian syndrome

Billable
Chapter 4
Endocrine, nutritional and metabolic diseases
Section
E20-E35
Use when the record says
  • Sclerocystic ovary syndrome
  • Stein-Leventhal syndrome
Indexed under
  • Sclerocystic ovary syndrome
  • Stein-Leventhal syndrome
  • Stein's syndrome
  • Polycystic › ovary, ovaries
  • Syndrome › bilateral polycystic ovarian
N83.2

Other and unspecified ovarian cysts

Not billable
Chapter 14
Diseases of the genitourinary system
Section
N80-N98

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