ICD-10 Code C74.12 – Malignant neoplasm of medulla of left adrenal gland (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C74.12 – Malignant neoplasm of medulla of left adrenal gland
What it is
C74.12 identifies a malignant tumor arising in the medulla of the left adrenal gland. Use it when documentation specifies primary cancer in that exact adrenal location.
Clinical signs
Clinical features vary; refer to documentation. Patients may have signs related to an adrenal mass or hormone secretion, but you should code only what is documented and confirmed.
When to use this code
Use C74.12 when the provider documents primary malignant neoplasm of the left adrenal medulla. It is appropriate for pathology, imaging, or operative reports that clearly localize the cancer to that site. If laterality or adrenal region is not specified, check documentation.
Do not use for
Do not use this code for benign adrenal tumors, metastatic disease to the adrenal gland, or malignant neoplasms of the adrenal cortex. Check documentation if the site is described only as “adrenal gland” without medullary involvement.
Coding tip
Verify both laterality and medullary origin before assigning C74.12.