ICD-10 D33
Non-Billable HeaderBenign neoplasm of brain and other parts of central nervous system
About ICD-10-CM D33
ICD-10-CM code D33 represents Benign neoplasm of brain and other parts of central nervous system. This is a non-billable header code in the Neoplasms chapter (block D33). The 2026 edition of ICD-10-CM D33 became effective on October 1, 2025. Non-billable codes cannot be used as a primary or secondary diagnosis on a claim, use a more specific child code instead.
Type 1 Excludes
Pure excludes, these codes can never be coded together with D33. The conditions are mutually exclusive (e.g., congenital vs acquired forms).
- angioma (D18.0-)
- benign neoplasm of meninges (D32.-)
- benign neoplasm of peripheral nerves and autonomic nervous system (D36.1-)
- hemangioma (D18.0-)
- neurofibromatosis (Q85.0-)
- retro-ocular benign neoplasm (D31.6-)
Medicare LCD Coverage for D33
Local Coverage Determinations (LCDs) from CMS MACs that list D33 as a covered diagnosis.
This doesn't mean the code isn't covered, it means no MAC has issued a Local Coverage Determination naming this specific code. Coverage may still apply under National Coverage Determinations or general medical-necessity rules.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing D33.
Our payer policy database covers Aetna, Cigna, Anthem, BCBS, Humana, and Medicare Advantage plans, but D33 doesn't currently appear in any indexed policy. The code may still be covered under standard plan benefits.
CPT Codes Commonly Billed with D33
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
We don't have CPT pairings indexed for this specific code yet. Use the CPT search above to find common procedures, or check your payer's published medical policy for code-specific guidance.
Codes Adjacent To D33
Other codes in section D10-D36 (Benign neoplasms, except benign neuroendocrine tumors).
ICD-10 D33, Billing FAQ
Is ICD-10 code D33 billable? +
No, D33 is a non-billable header code. Use a more specific child code from block D33 when submitting claims.
What codes are Type 1 Excludes for D33? +
Type 1 Excludes (never code together with D33): angioma (D18.0-); benign neoplasm of meninges (D32.-); benign neoplasm of peripheral nerves and autonomic nervous system (D36.1-)
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on May 31, 2026.
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