2026 ICD-10-CM Diagnosis Code D33Benign neoplasm of brain and other parts of central nervous system

ICD-10-CM Codes›C00–D49›D10-D36›D33

ICD-10-CM D33
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

D33 is a non-billable ICD-10-CM category code for benign neoplasm of brain and other parts of central nervous system, so it cannot be submitted on claims. Use a more specific code from this category instead, such as D33.0, D33.1, D33.2, and D33.3.

Code Identity

ICD-10-CM Code
D33
Billable Status
No — Non-Billable Category
Code Describes
Benign neoplasm of brain and other parts of central nervous system
Chapter
D10-D36
Benign neoplasms, except benign neuroendocrine tumors

Code Classification

ChapterC00–D49Neoplasms
SectionD10-D36Benign neoplasms, except benign neuroendocrine tumors
CategoryD33Benign neoplasm of brain and other parts of central nervous system
This CodeD33Benign neoplasm of brain and other parts of central nervous system

Specific Coding for Benign neoplasm of brain and oth prt central nervous systemOverview

Non-specific codes like D33 require more characters. Use one of these billable codes instead:

  • Use D33.0 for Benign neoplasm of brain, supratentorial

  • Use D33.1 for Benign neoplasm of brain, infratentorial

  • Use D33.2 for Benign neoplasm of brain, unspecified

  • Use D33.3 for Benign neoplasm of cranial nerves

  • Use D33.4 for Benign neoplasm of spinal cord

  • Use D33.7 for Benign neoplasm of other specified parts of central nervous system

  • Use D33.9 for Benign neoplasm of central nervous system, unspecified

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Type 1 Excludes

  • 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

Patient EducationClinical

Benign Tumors

Tumors are abnormal growths in your body. They can be either benign or malignant. Benign tumors aren't cancer. Malignant ones are. Benign tumors grow only in one place. They cannot spread or invade other parts of your body. Even so, they can be dangerous if they press on vital organs, such as your brain.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About D33Overview

Is D33 a billable code?

No. This is a category header that groups the codes for benign neoplasm of brain and other parts of central nervous system, and headers cannot be submitted on claims. Claims for benign neoplasm of brain and other parts of central nervous system need a more specific code from this category, such as D33.0, D33.1, and D33.2.