Excludes1 pair
D12.9 vs D22.5
D12.9 and D22.5 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.
D12.9
Benign neoplasm of anus and anal canal
Billable
- Chapter 2
- Neoplasms
- Section
- D10-D36
Use when the record says
- Benign neoplasm of anus NOS
D22.5
Melanocytic nevi of trunk
Billable
- Chapter 2
- Neoplasms
- Section
- D10-D36
Use when the record says
- Melanocytic nevi of anal margin
- Melanocytic nevi of anal skin
- Melanocytic nevi of perianal skin
- Melanocytic nevi of skin of breast
Indexed under
- Becker's › pigmented hairy nevus
- Nevus › skin › abdominal wall
- Nevus › skin › anus, anal
- Nevus › skin › axilla, axillary fold
- Nevus › skin › back
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