Excludes1 pair
D37.8 vs D44-
D37.8 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 endocrine pancreas (D37.8)
D37.8
Neoplasm of uncertain behavior of other specified digestive organs
BillableUnspecified
- Chapter 2
- Neoplasms
- Section
- D37-D48
Use when the record says
- Neoplasm of uncertain behavior of anal canal
- Neoplasm of uncertain behavior of anal sphincter
- Neoplasm of uncertain behavior of anus NOS
- Neoplasm of uncertain behavior of esophagus
- Neoplasm of uncertain behavior of intestine NOS
- Neoplasm of uncertain behavior of pancreas
Indexed under
- Glucagonoma › pancreas › uncertain behavior
- Glucagonoma › unspecified site › uncertain behavior
- Insulinoma › pancreas › uncertain behavior
- Insulinoma › unspecified site › uncertain behavior
- Tumor › G cell › unspecified site
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