D44
⚠ Non-billable
Neoplasm of uncertain behavior of endocrine glands
ICD-10-CM · FY2026 · Neoplasms
Code
D44
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
Neoplasms
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Official coding notes
From CMS's ICD-10-CM Tabular List.
Excludes1 — never code together
- multiple endocrine adenomatosis (E31.2-)
- multiple endocrine neoplasia (E31.2-)
- neoplasm of uncertain behavior of endocrine pancreas (D37.8)
- neoplasm of uncertain behavior of ovary (D39.1-)
- neoplasm of uncertain behavior of testis (D40.1-)
- neoplasm of uncertain behavior of thymus (D38.4)
Frequently asked questions
What is ICD-10 code D44?
ICD-10-CM code D44 represents Neoplasm of uncertain behavior of endocrine glands. It is a non-billable header code requiring a more specific subcategory in the Neoplasms chapter, effective October 1, 2025 – September 30, 2026.
Is D44 billable?
No. D44 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is D44 in?
D44 belongs to the Neoplasms chapter (C00–D49) of ICD-10-CM.
Related codes in the D44 category
D44.0
Neoplasm of uncertain behavior of thyroid gland
Billable
D44.1
Neoplasm of uncertain behavior of adrenal gland
Non-billable
D44.2
Neoplasm of uncertain behavior of parathyroid gland
Billable
D44.3
Neoplasm of uncertain behavior of pituitary gland
Billable
D44.4
Neoplasm of uncertain behavior of craniopharyngeal duct
Billable
D44.5
Neoplasm of uncertain behavior of pineal gland
Billable
D44.6
Neoplasm of uncertain behavior of carotid body
Billable
D44.7
Neoplasm of uncertain behavior of aortic body and other paraganglia
Billable
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