D37.8 vs D44
D37.8 and D44 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.
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