Excludes1 pair
D40- vs D44-
D40 and D44 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 D44
neoplasm of uncertain behavior of testis (D40.1-)
D40
Neoplasm of uncertain behavior of male genital organs
Not billable
- Chapter 2
- Neoplasms
- Section
- D37-D48
D44
Neoplasm of uncertain behavior of endocrine glands
Not billable
- Chapter 2
- Neoplasms
- Section
- D37-D48
Indexed under
- Adenoma › endocrine, multiple › two or more specified sites
- Adenoma › multiple endocrine › two or more specified sites
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