D43
ICD-10Non-billable categoryNeoplasm of uncertain behavior of brain and cnsl
Official ICD-10-CM descriptor (FY2026)
Neoplasm of uncertain behavior of brain and central nervous system
D43 is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.
Excludes1
Not coded here. An Excludes1 code should never be reported at the same time as the code above it.
- neoplasm of uncertain behavior of peripheral nerves and autonomic nervous system (D48.2)
More specific codes under D43
- D43.0Neoplasm of uncertain behavior of brain, supratentorial
- D43.1Neoplasm of uncertain behavior of brain, infratentorial
- D43.2Neoplasm of uncertain behavior of brain, unspecified
- D43.3Neoplasm of uncertain behavior of cranial nerves
- D43.4Neoplasm of uncertain behavior of spinal cord
- D43.8Neoplasm of uncertain behavior of prt central nervous system
- D43.9Neoplasm of uncertain behavior of cnsl, unsp
Where this code sits
- Chapter
- 2. Neoplasms (C00-D49)
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ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.