D35.1 Benign neoplasm of parathyroid gland

Billable ICD-10-CM code, FY2026.

Applies from D35 Benign neoplasm of other and unspecified endocrine glands

Excludes1 (never code together)

• benign neoplasm of endocrine pancreas (D13.7)
• benign neoplasm of ovary (D27.-)
• benign neoplasm of testis (D29.2.-)
• benign neoplasm of thymus (D15.0)

Use additional code

• code to identify any functional activity

MS-DRG index

Defines the logic of DRG(s) 643-645 in MDC 10.

Approximate ICD-9-CM (GEMs)

• 227.1 Benign neoplasm of parathyroid gland

Diagnosis Index entries for D35.1

• Adenoma › chief cell
• Adenoma › water-clear cell

Nearby codes

• D35 Benign neoplasm of other and unspecified endocrine glands
• D35.0 Benign neoplasm of adrenal gland
• 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 (this code)
• 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