ICD-10 Code D33.0 – Benign neoplasm of brain, supratentorial (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D33.0 – Benign neoplasm of brain, supratentorial
What it is
This code identifies a noncancerous tumor located in the supratentorial portion of the brain, above the tentorium. Use it when documentation clearly states a benign intracranial neoplasm in that region.
Clinical signs
Clinical features vary; refer to documentation. Commonly reported findings may include headaches, seizures, focal neurologic deficits, or signs of increased intracranial pressure, depending on tumor size and location.
When to use this code
Use D33.0 when the provider documents a benign brain neoplasm in the supratentorial area, such as the cerebral hemispheres or related structures. It also fits when imaging or pathology confirms a benign lesion and the site is specified. If the record only says “brain tumor” or the location is unclear, check documentation.
Do not use for
Do not use this code for malignant brain tumors, metastatic disease, or tumors in infratentorial sites. If the documentation does not specify benign behavior or supratentorial location, check documentation.
Coding tip
Capture both the benign nature and exact intracranial site from the record before assigning D33.0.