Is D43.9 a billable ICD-10 code?

Yes. D43.9 (Neoplasm of uncertain behavior of central nervous system, unspecified) is billable and can be used for insurance claims. Always verify payer-specific requirements.

D43.9 ✓ Billable

Neoplasm of uncertain behavior of central nervous system, unspecified

Q: What is ICD-10 code D43.9?

ICD-10-CM code D43.9 stands for "Neoplasm of uncertain behavior of central nervous system, unspecified". It is a billable code in the Neoplasms chapter, effective FY2026 (Oct 1, 2025 – Sep 30, 2026).

ICD-10-CM · FY2026 · Neoplasms

Code

D43.9

System

ICD-10-CM

Billable

Yes — valid for submission

Effective

FY2026

Chapter

Neoplasms

Source

CMS / CDC NCHS

⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.

Frequently asked questions

What is ICD-10 code D43.9?

ICD-10-CM code D43.9 represents Neoplasm of uncertain behavior of central nervous system, unspecified. It is a billable diagnosis code in the Neoplasms chapter, effective October 1, 2025 – September 30, 2026.

Is D43.9 billable?

Yes. D43.9 is a valid billable ICD-10-CM code for insurance claims and clinical documentation.

What chapter is D43.9 in?

D43.9 belongs to the Neoplasms chapter (C00–D49) of ICD-10-CM.

Related codes in the D43 category

D43 Neoplasm of uncertain behavior of brain and central nervous system Non-billable D43.0 Neoplasm of uncertain behavior of brain, supratentorial Billable D43.1 Neoplasm of uncertain behavior of brain, infratentorial Billable D43.2 Neoplasm of uncertain behavior of brain, unspecified Billable D43.3 Neoplasm of uncertain behavior of cranial nerves Billable D43.4 Neoplasm of uncertain behavior of spinal cord Billable D43.8 Neoplasm of uncertain behavior of other specified parts of central nervous system Billable

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