ICD-10 Code C74.02 – Malignant neoplasm of cortex of left adrenal gland (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C74.02 – Malignant neoplasm of cortex of left adrenal gland
What it is
This code identifies a malignant tumor arising from the cortex of the left adrenal gland. Use it when the record specifically documents a primary cancer of the left adrenal cortex.
Clinical signs
Clinical features vary; refer to documentation. Adrenal cortical cancers may present with an adrenal mass, pain, or signs of hormone excess, but coding depends on documented diagnosis rather than symptoms alone.
When to use this code
Use C74.02 when the provider documents malignant neoplasm of the left adrenal cortex, including confirmed primary adrenal cortical carcinoma. It is appropriate for encounters focused on diagnosis, staging, or follow-up of this specific cancer. Check documentation if laterality or adrenal layer is unclear.
Do not use for
Do not use this code for benign adrenal tumors, metastatic disease to the adrenal gland, or unspecified adrenal malignancy. If the record does not clearly state the left cortex, check documentation.
Coding tip
Verify both laterality and cortical origin before assigning C74.02.