ICD-10 Code C79.7 – Secondary malignant neoplasm of adrenal gland (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C79.7 – Secondary malignant neoplasm of adrenal gland
What it is
This code identifies metastatic cancer that has spread to the adrenal gland from a primary tumor elsewhere in the body. It does not describe a primary adrenal cancer.
Clinical signs
Clinical features vary; refer to documentation. Imaging or pathology may show an adrenal mass consistent with metastatic disease, often in a patient with known malignancy elsewhere.
When to use this code
Use C79.7 when the record clearly states secondary malignant neoplasm of the adrenal gland, adrenal metastasis, or spread to the adrenal gland. You may also use it when imaging or biopsy confirms metastatic involvement and the provider documents the site as secondary.
Code the primary cancer separately when it is still active or relevant to the encounter. If the adrenal finding is uncertain or not documented as metastatic, check documentation before assigning this code.
Do not use for
Do not use this code for primary adrenal malignancies or benign adrenal masses. It is also not appropriate when the adrenal lesion is only suspected or not linked to metastatic disease.
Coding tip
Confirm that the provider names the adrenal gland as a metastatic site, not just an incidental adrenal lesion.