Malignant neoplasm of brain (C71) ICD-10-CM
The C71 code range covers malignant neoplasm of brain with 11 ICD-10-CM diagnosis codes. 10 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Codes in the C71 Range 11 codes · 10 billable
- C71 Malignant neoplasm of brainNon-billable
- C71.0 Malignant neoplasm of cerebrum, except lobes and ventricles
- C71.1 Malignant neoplasm of frontal lobe
- C71.2 Malignant neoplasm of temporal lobe
- C71.3 Malignant neoplasm of parietal lobe
- C71.4 Malignant neoplasm of occipital lobe
- C71.5 Malignant neoplasm of cerebral ventricle
- C71.6 Malignant neoplasm of cerebellum
- C71.7 Malignant neoplasm of brain stem
- C71.8 Malignant neoplasm of overlapping sites of brain
- C71.9 Malignant neoplasm of brain, unspecified
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the C71 range.
Malignant Brain Neoplasm
A primary or metastatic malignant neoplasm affecting the brain.
Malignant Brain Stem Neoplasm
A primary or metastatic malignant neoplasm that affects the brain stem.
Malignant Cerebellar Neoplasm
Primary and secondary (metastatic) malignant tumors that occur in the cerebellum. Histologic types include medulloblastomas, high grade (WHO Stage III or IV) cerebellar astrocytomas, lymphomas, gangliogliomas, gliosarcomas, and several other subtypes. The most frequent malignant cerebellar neoplasm of childhood is medulloblastoma. In adults, metastases from other sites are relatively common. Clinical features include ataxia, headache, nausea, dizziness, nystagmus, diplopia, papilledema, etc.
About the C71 Code Range
A malignant brain neoplasm is a cancerous growth affecting the brain, whether it starts there or spreads there from elsewhere.
C71 is organized by the part of the brain affected. C71.0 identifies the cerebrum outside its lobes and ventricles. Separate codes identify the frontal, temporal, parietal, and occipital lobes: C71.1 through C71.4. Other codes distinguish the cerebral ventricle, cerebellum, and brain stem. C71.8 identifies overlapping brain sites; C71.9 identifies an unspecified brain site.
Questions About This Page
How many billable codes are in the C71 range?
Of the 11 codes in this range, 10 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the C71 range classify?
The range classifies malignant neoplasm of brain. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
