D44
ICD-10Non-billable categoryNeoplasm of uncertain behavior of endocrine glands
Official ICD-10-CM descriptor (FY2026)
Neoplasm of uncertain behavior of endocrine glands
D44 is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.
Excludes1
Not coded here. An Excludes1 code should never be reported at the same time as the code above it.
- 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)
More specific codes under D44
- D44.0Neoplasm of uncertain behavior of thyroid gland
- D44.1Neoplasm of uncertain behavior of adrenal glandcategory
- D44.2Neoplasm of uncertain behavior of parathyroid gland
- D44.3Neoplasm of uncertain behavior of pituitary gland
- D44.4Neoplasm of uncertain behavior of craniopharyngeal duct
- D44.5Neoplasm of uncertain behavior of pineal gland
- D44.6Neoplasm of uncertain behavior of carotid body
- D44.7Neoplasm of uncrt behav of aortic body and oth paraganglia
- D44.9Neoplasm of uncertain behavior of unsp endocrine gland
Where this code sits
- Chapter
- 2. Neoplasms (C00-D49)
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ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.