ICD-10 Code C74.10 – Malignant neoplasm of medulla of unspecified adrenal gland (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C74.10 – Malignant neoplasm of medulla of unspecified adrenal gland
What it is
This code identifies a malignant tumor arising in the medulla of an adrenal gland when the side is not specified. Use it for documented adrenal medullary cancer, including pheochromocytoma-type malignancy if recorded as such.
Clinical signs
Clinical features vary; refer to documentation. Patients may have signs related to adrenal hormone excess, such as episodic hypertension, palpitations, headache, sweating, or an adrenal mass found on imaging or pathology.
When to use this code
Use this code when the provider documents a malignant neoplasm of the adrenal medulla and does not identify left or right adrenal gland. It also fits confirmed pathology or imaging-supported documentation of adrenal medullary malignancy. If the record only says adrenal mass or neoplasm, check documentation before assigning C74.10.
Do not use for
Do not use this code for benign adrenal tumors, unspecified adrenal gland cancer without medullary detail, or metastatic disease to the adrenal gland unless the primary site is the adrenal medulla. Check documentation.
Coding tip
Verify laterality and whether the documentation specifies medulla before coding; if the record is unclear, query the provider.