Malignant neoplasms of thyroid and other endocrine glands (C73-C75)
chapter 2: Neoplasms
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Official coding guidelines
From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.
Rules for coding benign and malignant neoplasms: using the Neoplasm Table, sequencing primary and secondary sites, treatment encounters, complications, and current cancer versus personal history.
- Admission/Encounter for treatment of primary site (page 33)
- Admission/Encounter for treatment of secondary site (page 33)
- Coding and sequencing of complications (page 34)
- Primary malignancy previously excised (page 34)
- Admissions/Encounters involving antineoplastic chemotherapy, immunotherapy and radiation therapy (page 35)
- Admission/encounter to determine extent of malignancy (page 36)
- Symptoms, signs, and abnormal findings listed in Chapter 18 associated with neoplasms (page 36)
- Admission/encounter for pain control/management (page 36)
All codes under C73-C75
C73-C75 can't be used on a claim. Pick a billable code below; grey headings group them.
- C73Malignant neoplasm of thyroid gland
- C74Malignant neoplasm of adrenal gland
- C74.0Malignant neoplasm of cortex of adrenal gland
- C74.00Malignant neoplasm of cortex of unspecified adrenal gland
- C74.01Malignant neoplasm of cortex of right adrenal gland
- C74.02Malignant neoplasm of cortex of left adrenal gland
- C74.1Malignant neoplasm of medulla of adrenal gland
- C74.10Malignant neoplasm of medulla of unspecified adrenal gland
- C74.11Malignant neoplasm of medulla of right adrenal gland
- C74.12Malignant neoplasm of medulla of left adrenal gland
- C74.9Malignant neoplasm of unspecified part of adrenal gland
- C74.90Malignant neoplasm of unspecified part of unspecified adrenal gland
- C74.91Malignant neoplasm of unspecified part of right adrenal gland
- C74.92Malignant neoplasm of unspecified part of left adrenal gland
- C75Malignant neoplasm of other endocrine glands and related structures
- C75.0Malignant neoplasm of parathyroid gland
- C75.1Malignant neoplasm of pituitary gland
- C75.2Malignant neoplasm of craniopharyngeal duct
- C75.3Malignant neoplasm of pineal gland
- C75.4Malignant neoplasm of carotid body
- C75.5Malignant neoplasm of aortic body and other paraganglia
- C75.8Malignant neoplasm with pluriglandular involvement, unspecified
- C75.9Malignant neoplasm of endocrine gland, unspecified
C73-C75 MS-DRGs
This code does not group to an MS-DRG as a principal diagnosis.
Other codes that refer to C73-C75
Notes on these codes point to C73-C75.
- Z85.85 Includes: Conditions classifiable to C73-C75
About the condition
Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.
Thyroid Cancer
Thyroid cancer is a cancer that starts in the tissues of the thyroid. Your thyroid is a small, butterfly-shaped gland in the front of your neck. It makes hormones that control the way the body uses energy. These hormones affect nearly every organ in your body and control many of your body's most important functions. For example, they affect your breathing, heart rate, weight, digestion, and moods.
Read more about thyroid cancer on MedlinePlus