D40.8 vs D48.5
D40.8 and D48.5 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.
D40.8
Neoplasm of uncertain behavior of other specified male genital organs
BillableUnspecified
- Chapter 2
- Neoplasms
- Section
- D37-D48
Use when the record says
- Neoplasm of uncertain behavior of skin of male genital organs
D48.5
Neoplasm of uncertain behavior of skin
Billable
- Chapter 2
- Neoplasms
- Section
- D37-D48
Use when the record says
- Neoplasm of uncertain behavior of anal margin
- Neoplasm of uncertain behavior of anal skin
- Neoplasm of uncertain behavior of perianal skin
- Neoplasm of uncertain behavior of skin of breast
Indexed under
- Nevus › bathing trunk
- Tumor › basal cell
- Nevus › pigmented › giant
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