C75.1
Malignant neoplasm of pituitary gland
Billable FY2026 2025-10-01 → 2026-09-30
Exclusions 9 never code together
C75code
Excludes1
- malignant carcinoid tumors (C7A.0-)C7A.0-
- malignant neoplasm of adrenal gland (C74.-)C74.-
- malignant neoplasm of endocrine pancreas (C25.4)C25.4
- malignant neoplasm of islets of Langerhans (C25.4)C25.4
- malignant neoplasm of ovary (C56.-)C56.-
- malignant neoplasm of testis (C62.-)C62.-
- malignant neoplasm of thymus (C37)C37
- malignant neoplasm of thyroid gland (C73)C73
- malignant neuroendocrine tumors (C7A.-)C7A.-
Excludes1 — never code together. The excluded condition and this one are mutually exclusive.
Instructional notes 8
C00-D49chapter
Notes
- Functional activity
- All neoplasms are classified in this chapter, whether they are functionally active or not. An additional code from Chapter 4 may be used, to identify functional activity associated with any neoplasm.
- Morphology [Histology]
- Chapter 2 classifies neoplasms primarily by site (topography), with broad groupings for behavior, malignant, in situ, benign, etc. The Table of Neoplasms should be used to identify the correct topography code. In a few cases, such as for malignant melanoma and certain neuroendocrine tumors, the morphology (histologic type) is included in the category and codes.
- Primary malignant neoplasms overlapping site boundaries
- A primary malignant neoplasm that overlaps two or more contiguous (next to each other) sites should be classified to the subcategory/code .8 ('overlapping lesion'), unless the combination is specifically indexed elsewhere. For multiple neoplasms of the same site that are not contiguous, such as tumors in different quadrants of the same breast, codes for each site should be assigned.
- Malignant neoplasm of ectopic tissue
- Malignant neoplasms of ectopic tissue are to be coded to the site mentioned, e.g., ectopic pancreatic malignant neoplasms are coded to pancreas, unspecified (C25.9).C25.9
Index entries leading here 2
- Carcinoma (malignant) — see also Neoplasm, by site, malignant
- Adenocarcinoma — see also Neoplasm, malignant, by site
Alongside this code 7 same parent — C75
C75.0 Malignant neoplasm of parathyroid gland C75.2 Malignant neoplasm of craniopharyngeal duct C75.3 Malignant neoplasm of pineal gland C75.4 Malignant neoplasm of carotid body C75.5 Malignant neoplasm of aortic body and other paraganglia C75.8 Malignant neoplasm with pluriglandular involvement, unsp C75.9 Malignant neoplasm of endocrine gland, unspecified
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.