Excludes1 pair
D10.0 vs D22.0
D10.0 and D22.0 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.
D10.0
Benign neoplasm of lip
Billable
- Chapter 2
- Neoplasms
- Section
- D10-D36
Use when the record says
- Benign neoplasm of lip (frenulum) (inner aspect) (mucosa) (vermilion border)
D22.0
Melanocytic nevi of lip
Billable
- Chapter 2
- Neoplasms
- Section
- D10-D36
Indexed under
- Nevus › skin › lip (lower) (upper)
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