A63.0 vs N90
A63.0 and N90 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 N90
anogenital (venereal) warts (A63.0)
A63.0
Anogenital (venereal) warts
Billable
- Chapter 1
- Certain infectious and parasitic diseases
- Section
- A50-A64
Use when the record says
- Anogenital warts due to (human) papillomavirus [HPV]
- Condyloma acuminatum
Indexed under
- Condyloma
- Condyloma › acuminatum
- Papilloma › acuminatum
- Verruca › acuminata (due to HPV) (filiformis) (simplex) (viral) (vulgaris)
- Verruca › venereal (due to HPV) (filiformis) (simplex) (viral) (vulgaris)
N90
Other noninflammatory disorders of vulva and perineum
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