2023 ICD-10-CM Diagnosis Code C75.1

Malignant neoplasm of pituitary gland

    2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
  • C75.1 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2023 edition of ICD-10-CM C75.1 became effective on October 1, 2022.
  • This is the American ICD-10-CM version of C75.1 - other international versions of ICD-10 C75.1 may differ.
The following code(s) above C75.1 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to C75.1:
  • C00-D49
    2023 ICD-10-CM Range C00-D49


    • 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).
  • C75
    ICD-10-CM Diagnosis Code C75

    Malignant neoplasm of other endocrine glands and related structures

      2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • malignant carcinoid tumors (C7A.0-)
    • malignant neoplasm of adrenal gland (C74.-)
    • malignant neoplasm of endocrine pancreas (C25.4)
    • malignant neoplasm of islets of Langerhans (C25.4)
    • malignant neoplasm of ovary (C56.-)
    • malignant neoplasm of testis (C62.-)
    • malignant neoplasm of thymus (C37)
    • malignant neoplasm of thyroid gland (C73)
    • malignant neuroendocrine tumors (C7A.-)
    Malignant neoplasm of other endocrine glands and related structures
Approximate Synonyms
  • Cancer of the pituitary gland
  • Malignant tumor of pituitary gland
Clinical Information
  • A primary or metastatic malignant neoplasm affecting the pituitary gland. Representative examples include functioning or non-functioning carcinomas arising from the anterior lobe of the pituitary gland, chordomas, chondrosarcomas, and metastatic carcinomas from the breast, lung, and gastrointestinal tract.
ICD-10-CM C75.1 is grouped within Diagnostic Related Group(s) (MS-DRG v40.0):
  • 643 Endocrine disorders with mcc
  • 644 Endocrine disorders with cc
  • 645 Endocrine disorders without cc/mcc

Convert C75.1 to ICD-9-CM

Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
  • 2022 (effective 10/1/2021): No change
  • 2023 (effective 10/1/2022): No change

Diagnosis Index entries containing back-references to C75.1:

ICD-10-CM Codes Adjacent To C75.1
C74.1 Malignant neoplasm of medulla of adrenal gland
C74.10 Malignant neoplasm of medulla of unspecified adrenal gland
C74.11 Malignant neoplasm of medulla of right adrenal gland
C74.12 Malignant neoplasm of medulla of left adrenal gland
C74.9 Malignant neoplasm of unspecified part of adrenal gland
C74.90 Malignant neoplasm of unspecified part of unspecified adrenal gland
C74.91 Malignant neoplasm of unspecified part of right adrenal gland
C74.92 Malignant neoplasm of unspecified part of left adrenal gland
C75 Malignant neoplasm of other endocrine glands and related structures
C75.0 Malignant neoplasm of parathyroid gland
C75.1 Malignant neoplasm of pituitary 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, unspecified
C75.9 Malignant neoplasm of endocrine gland, unspecified
C7A Malignant neuroendocrine tumors
C7A.0 Malignant carcinoid tumors
C7A.00 Malignant carcinoid tumor of unspecified site
C7A.01 Malignant carcinoid tumors of the small intestine

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.