Benign neoplasm of other and unspecified endocrine glands (D35) ICD-10-CM
The D35 code range covers benign neoplasm of other and unspecified endocrine glands with 13 ICD-10-CM diagnosis codes. 11 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Use Additional Code
The “use additional code” indicates that a secondary code could be used to further specify the patient’s condition. This note is not mandatory and is only used if enough information is available to assign an additional code.
- code to identify any functional activity
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Codes in the D35 Range 13 codes · 11 billable
- D35 Benign neoplasm of other and unspecified endocrine glandsNon-billable
- D35.0 Benign neoplasm of adrenal glandNon-billable
- D35.00 Benign neoplasm of unspecified adrenal gland
- D35.01 Benign neoplasm of right adrenal gland
- D35.02 Benign neoplasm of left adrenal gland
- D35.1 Benign neoplasm of parathyroid gland
- D35.2 Benign neoplasm of pituitary gland
- D35.3 Benign neoplasm of craniopharyngeal duct
- D35.4 Benign neoplasm of pineal gland
- D35.5 Benign neoplasm of carotid body
- D35.6 Benign neoplasm of aortic body and other paraganglia
- D35.7 Benign neoplasm of other specified endocrine glands
- D35.9 Benign neoplasm of endocrine gland, unspecified
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the D35 range.
Benign Adrenal Gland Neoplasm
A neoplasm that arises from the adrenal gland and is characterized by the absence of atypical or malignant cytological and architectural features, and absence of invasive features or metastatic potential.
Benign Endocrine Neoplasm
An epithelial neoplasm that arises from an endocrine gland and is characterized by the absence of atypical or malignant cytological and architectural features, and absence of invasive features or metastatic potential.
Benign Parathyroid Gland Neoplasm
A neoplasm that arises from the parathyroid glands and is characterized by the absence of atypical or malignant cytological and architectural features, and absence of invasive features or metastatic potential.
Benign Pituitary Gland Neoplasm
A neoplasm that arises from the anterior or posterior lobe of pituitary gland and is characterized by the absence of atypical or malignant cytological and architectural features, and absence of invasive features or metastatic potential.
Craniopharyngioma
A benign, partly cystic, epithelial tumor of the sellar region, presumably derived from Rathke pouch epithelium. It affects mainly children and young adults. There are two clinicopathological forms: adamantinomatous craniopharyngioma and papillary craniopharyngioma. The most significant factor associated with recurrence is the extent of surgical resection, with lesions greater than 5 cm in diameter carrying a markedly worse prognosis. (Adapted from WHO)
Pineocytoma
A WHO grade 1 slow growing tumor, more frequently affecting young adults. It is composed of small, uniform, mature cells resembling pineocytes with occasional large pineocytomatous rosettes. It may show a wide range of divergent phenotypes, including neuronal, glial, melanocytic, photoreceptor and mesenchymal differentiation. Pineocytoma generally has a relatively favorable prognosis. (Adapted from WHO)
About the D35 Code Range
Benign growths of endocrine glands and the other named sites appear in this category.
The subdivisions separate sites: the adrenal, parathyroid, pituitary and pineal glands; the craniopharyngeal duct; the carotid body; and the aortic body and other paraganglia. Within the adrenal gland group, D35.0 divides into unspecified, right and left adrenal gland codes. D35.7 identifies other specified endocrine glands, while D35.9 leaves the endocrine gland unspecified.
Questions About This Page
How many billable codes are in the D35 range?
Of the 13 codes in this range, 11 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the D35 range classify?
The range classifies benign neoplasm of other and unspecified endocrine glands. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
