Excludes1 pair
C05- vs C46.2
C05 and C46.2 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 C05
Kaposi's sarcoma of palate (C46.2)
C46.2
Kaposi's sarcoma of palate
Billable
- Chapter 2
- Neoplasms
- Section
- C45-C49
Indexed under
- Kaposi's › sarcoma › palate (hard) (soft)
- Sarcoma › Kaposi's › palate (hard) (soft)
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