ICD-10 Code C74.00 – Malignant neoplasm of cortex of unspecified adrenal gland (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C74.00 – Malignant neoplasm of cortex of unspecified adrenal gland
What it is
C74.00 identifies a malignant tumor arising from the adrenal cortex when the side is not documented. Use it for a primary adrenal cortical cancer, not for benign adrenal masses or metastatic disease.
Clinical signs
Clinical features vary; refer to documentation. Patients may have an adrenal mass found on imaging, abdominal or flank pain, or hormone-related findings if the tumor is functional.
When to use this code
Use C74.00 when the provider documents malignant neoplasm of the adrenal cortex and does not specify right or left adrenal gland. It also fits pathology or imaging reports confirming primary cortical malignancy without laterality. If the record names a specific adrenal side, choose the more specific code instead.
Do not use for
Do not use this code for benign adrenal adenoma, adrenal medullary tumors, or secondary metastatic involvement of the adrenal gland. Check documentation if the exact adrenal site or primary origin is unclear.
Coding tip
Confirm laterality and primary site in the final report before assigning C74.00.