ICD-10 D43
Non-Billable HeaderNeoplasm of uncertain behavior of brain and central nervous system
About ICD-10-CM D43
ICD-10-CM code D43 represents Neoplasm of uncertain behavior of brain and central nervous system. This is a non-billable header code in the Neoplasms chapter (block D43). The 2026 edition of ICD-10-CM D43 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 D43. The conditions are mutually exclusive (e.g., congenital vs acquired forms).
- neoplasm of uncertain behavior of peripheral nerves and autonomic nervous system (D48.2)
Medicare LCD Coverage for D43
Local Coverage Determinations (LCDs) from CMS MACs that list D43 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 D43.
Our payer policy database covers Aetna, Cigna, Anthem, BCBS, Humana, and Medicare Advantage plans, but D43 doesn't currently appear in any indexed policy. The code may still be covered under standard plan benefits.
CPT Codes Commonly Billed with D43
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 D43
Other codes in section D37-D48 (Neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes).
ICD-10 D43, Billing FAQ
Is ICD-10 code D43 billable? +
No, D43 is a non-billable header code. Use a more specific child code from block D43 when submitting claims.
What codes are Type 1 Excludes for D43? +
Type 1 Excludes (never code together with D43): neoplasm of uncertain behavior of peripheral nerves and autonomic nervous system (D48.2)
Get the full PayerReady toolkit
Free access to CPT/ICD-10 lookup, denial appeals, fee comparator, and claim auditing with credentialing enrollment.
Start free →Run this code through our claim audit tool
Check NCCI bundling, MUE limits, and modifier logic before submission.
Try the auditor →Did this page help?
Quick signal so we know what to improve.
If you want a code reference page that doesn't exist yet, email coding@payerready.com.
Tell us what's missing or wrong: coding@payerready.com. We respond within 5 business days.
Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on June 1, 2026.
Powered by 11K CPT · 98K ICD-10 · 860K MPFS rates · 4.5M NCCI edits · 9.5M NPIs. Our data methodology · About our coding team