D27 vs D35
D27 and D35 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 D35
benign neoplasm of ovary (D27.-)
D27
Benign neoplasm of ovary
Not billable
- Chapter 2
- Neoplasms
- Section
- D10-D36
Indexed under
- Thecoma
- Thecoma › luteinized
- Tumor › hilar cell
- Tumor › hilus cell
- Tumor › lipid cell, ovary
D35
Benign neoplasm of other and unspecified endocrine glands
Not billable
- Chapter 2
- Neoplasms
- Section
- D10-D36
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