ICD-10 Code C71.0 – Malignant neoplasm of cerebrum, except lobes and ventricles (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C71.0 – Malignant neoplasm of cerebrum, except lobes and ventricles
What it is
C71.0 identifies a malignant tumor arising in the cerebrum, excluding the lobes and ventricles. Use it when documentation specifies this central cerebral location and confirms malignancy.
Clinical signs
Clinical features vary; refer to documentation. Brain tumors in this area may present with focal neurologic deficits, seizures, headache, or cognitive changes, depending on size and exact location.
When to use this code
Use C71.0 when the provider documents a malignant neoplasm of the cerebrum and clearly excludes the lobes and ventricles. This code also fits pathology or imaging reports that localize the tumor to the specified cerebrum site. If the record only says “brain tumor” or gives a broader cerebral site, check documentation before coding.
Do not use for
Do not use this code for malignant neoplasms of the cerebral lobes, ventricles, or unspecified brain sites. If the location is unclear or described differently, select the more accurate documented code.
Coding tip
Confirm the exact anatomic site in the report before assigning C71.0.