Benign neoplasm of brain and other parts of central nervous system (D33) ICD-10-CM
The D33 code range covers benign neoplasm of brain and other parts of central nervous system with 8 ICD-10-CM diagnosis codes. 7 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 D33 Range 8 codes · 7 billable
- D33 Benign neoplasm of brain and other parts of central nervous systemNon-billable
- D33.0 Benign neoplasm of brain, supratentorial
- D33.1 Benign neoplasm of brain, infratentorial
- D33.2 Benign neoplasm of brain, unspecified
- D33.3 Benign neoplasm of cranial nerves
- D33.4 Benign neoplasm of spinal cord
- D33.7 Benign neoplasm of other specified parts of central nervous system
- D33.9 Benign neoplasm of central nervous system, unspecified
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the D33 range.
Benign Brain Neoplasm
A neoplasm that arises from the brain and is characterized by the absence of atypical or malignant cytological and architectural features, and absence of invasive features or metastatic potential.
Benign Central Nervous System Neoplasm
A neoplasm that arises from the central nervous system and is characterized by the absence of atypical or malignant cytological and architectural features, and absence of invasive features or metastatic potential.
Benign Cranial Nerve Neoplasm
A neoplasm that arises from a cranial nerve and is characterized by the absence of atypical or malignant cytological and architectural features, and absence of invasive features or metastatic potential.
Benign Infratentorial Neoplasm
A neoplasm that arises from the infratentorial region and is characterized by the absence of atypical or malignant cytological and architectural features, and absence of invasive features or metastatic potential.
Benign Spinal Cord Neoplasm
A neoplasm that arises from the spinal cord and is characterized by the absence of atypical or malignant cytological and architectural features, and absence of invasive features or metastatic potential.
Benign Supratentorial Neoplasm
A neoplasm that arises from above the cerebellar tentorium and is characterized by the absence of atypical or malignant cytological and architectural features, and absence of invasive features or metastatic potential.
About the D33 Code Range
These benign growths arise in the brain or other parts of the central nervous system. Benign means they lack invasive features or the potential to spread.
The subdivisions separate brain growths by location: D33.0 is supratentorial, in the upper brain region, and D33.1 is infratentorial, in the lower region. D33.2 leaves the brain location unspecified. Other subdivisions identify the cranial nerves, spinal cord, another specified central nervous system site, or an unspecified site.
Questions About This Page
How many billable codes are in the D33 range?
Of the 8 codes in this range, 7 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 D33 range classify?
The range classifies benign neoplasm of brain and other parts of central nervous system. 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.
