ICD-10 Code D35.4 – Benign neoplasm of pineal gland (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D35.4 – Benign neoplasm of pineal gland
What it is
D35.4 identifies a noncancerous tumor of the pineal gland, a small endocrine structure in the brain. Use this code when documentation states a benign pineal gland neoplasm.
Clinical signs
Clinical features vary; refer to documentation. Pineal gland tumors may be found on imaging or cause symptoms from local mass effect, such as headache, nausea, or visual changes.
When to use this code
Use D35.4 when the provider documents a benign neoplasm arising in the pineal gland, or when pathology or imaging clearly supports that diagnosis. It may also apply when the record states a benign pineal tumor without evidence of malignancy. Check documentation if the site is uncertain.
Do not use for
Do not use this code for malignant pineal tumors, metastatic disease, or nonspecific intracranial masses. If the record only says “pineal lesion” or “brain mass,” you need clearer documentation.
Coding tip
Verify both the benign nature and the pineal gland site before assigning D35.4.