Excludes1 pair
B07- vs B33.8
B07 and B33.8 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 B33.8
viral warts due to human papillomavirus infection (B07)
B07
Viral warts
Not billable
- Chapter 1
- Certain infectious and parasitic diseases
- Section
- B00-B09
Use when the record says
- verruca simplex
- verruca vulgaris
- viral warts due to human papillomavirus
B33.8
Other specified viral diseases
BillableUnspecified
- Chapter 1
- Certain infectious and parasitic diseases
- Section
- B25-B34
Indexed under
- Aujeszky's disease
- Tahyna fever
- Coxsackie › specific disease NEC
- Fever › Tahyna
- Lymphocytosis › infectious (acute)
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