Malignant neoplasm of other endocrine glands and related structures


  • 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.-)
  • 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).

Related Codes

Malignant neoplasm of other endocrine glands and related structures
Malignant neoplasm of parathyroid gland
Malignant neoplasm of pituitary gland
Malignant neoplasm of craniopharyngeal duct
Malignant neoplasm of pineal gland
Malignant neoplasm of carotid body
Malignant neoplasm of aortic body and other paraganglia
Malignant neoplasm with pluriglandular involvement, unspecified
Malignant neoplasm of endocrine gland, unspecified