ICD-10 Code D35.00 – Benign neoplasm of unspecified adrenal gland (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D35.00 – Benign neoplasm of unspecified adrenal gland
What it is
This code identifies a noncancerous growth in an adrenal gland when the side is not specified. It is used when documentation confirms a benign adrenal tumor but does not name the right or left gland.
Clinical signs
Clinical features vary; refer to documentation. Benign adrenal tumors are often found incidentally on imaging, and some may be hormonally inactive or associated with endocrine findings if secretion is documented.
When to use this code
Use D35.00 when the record clearly states a benign neoplasm of the adrenal gland and laterality is not documented. It also fits incidental adrenal masses described as benign when no more specific site is recorded. If the provider specifies right or left adrenal gland, select the laterality-specific code instead.
Do not use for
Do not use this code for malignant adrenal tumors, adrenal hyperplasia, or unspecified adrenal mass without a benign neoplasm diagnosis. Check documentation if the finding is only an incidental lesion or if the pathology is not confirmed.
Coding tip
Verify whether the note or imaging report identifies the adrenal side before assigning the unspecified code.