D43.9

D43.9: Neoplasm of uncertain behavior of central nervous system, unspecified

Billable / specific codeICD-10-CM

D43.9 is a billable, specific ICD-10-CM code for neoplasm of uncertain behavior of central nervous system, unspecified. It is valid for submission on a claim.

Check D43.9 with the rest of the claim: free scrubber

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

Neoplasm of uncertain behavior of nervous system (central) NOS

Excludes1 inherited from the categories above D43.9

A category’s note binds every code beneath it.

Written on D43: Neoplasm of uncertain behavior of brain and central nervous system

neoplasm of uncertain behavior of peripheral nerves and autonomic nervous system (D48.2)

Risk adjustment

D43.9 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:

HCC 23 Prostate, Breast, and Other Cancers and Tumors0.186 RAF

Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score. Look up the whole chart to see which of its HCCs the hierarchy would zero.

Medicare coverage

D43.9 is named in 7 Medicare coverage policies: 7 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

A52480Oral Antiemetic Drugs (Replacement for Intravenous Antiemetics) - Policy Article
A56612Billing and Coding: CT of the Head
A56695Billing and Coding: Implantable Infusion Pump
A56722Billing and Coding: Intraoperative Neurophysiological Testing

Code history

Unchanged in every release from FY2024 to FY2027.