C75.1 Malignant neoplasm of pituitary gland
The ICD-10-CM code for Malignant neoplasm of pituitary gland is C75.1 (FY2026). It is a billable, claim-ready diagnosis code.
Classification
- Chapter
- 2: Neoplasms (C00-D49)
- Section
- C73-C75: Malignant neoplasms of thyroid and other endocrine glands (C73-C75)
- Category C75
- 9 codes (8 billable)
- FY2026 Status
- Stable since FY2024
Also Known As
ICD-10-CM Alphabetic Index entries that lead to C75.1:
- Carcinoma (malignant) › acidophil › unspecified site
- Adenocarcinoma › acidophil › unspecified site
- Adenocarcinoma › eosinophil › unspecified site
- Adenocarcinoma › basophil › unspecified site
- Carcinoma (malignant) › acidophil-basophil, mixed › unspecified site
- Carcinoma (malignant) › basophil-acidophil, mixed › unspecified site
- Adenocarcinoma › chromophobe › unspecified site
- Carcinoma (malignant) › basophil › unspecified site
U.S. Hospital Utilization
- An estimated 265 U.S. inpatient stays in 2023 included C75.1 among the documented diagnoses.
- 95 stays listed it as the principal diagnosis.
Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.
Official Coding Guidelines
Tx of primary site (TOC entry)a. Admission/Encounter for treatment of primary site ............................................................. 33
Tx of secondary site (TOC entry)b. Admission/Encounter for treatment of secondary site .......................................................... 33
Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026