2027 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 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

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
Short Description
Benign neoplasm of brain and oth prt 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

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to D33: its own notes plus those printed at Chapter 2. A note printed at a category, block or chapter applies to every code under it.

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

  • 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-)

Notes

General instructions on how these codes are used.

From Chapter 2 (C00-D49) Neoplasms applies to 1,730 codes
  • Functional activity
  • All neoplasms are classified in this chapter, whether they are functionally active or not. An additional code from Chapter 4 may be used, to identify functional activity associated with any neoplasm.
  • Morphology [Histology]
  • Chapter 2 classifies neoplasms primarily by site (topography), with broad groupings for behavior, malignant, in situ, benign, etc. The Table of Neoplasms should be used to identify the correct topography code. In a few cases, such as for malignant melanoma and certain neuroendocrine tumors, the morphology (histologic type) is included in the category and codes.
  • Primary malignant neoplasms overlapping site boundaries
  • A primary malignant neoplasm that overlaps two or more contiguous (next to each other) sites should be classified to the subcategory/code .8 ('overlapping lesion'), unless the combination is specifically indexed elsewhere. For multiple neoplasms of the same site that are not contiguous, such as tumors in different quadrants of the same breast, codes for each site should be assigned.
  • Malignant neoplasm of ectopic tissue
  • Malignant neoplasms of ectopic tissue are to be coded to the site mentioned, e.g., ectopic pancreatic malignant neoplasms are coded to pancreas, unspecified (C25.9).

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Clinical InformationClinical

  • Benign Central Nervous System Neoplasm

    a neoplasm that arises from the central nervous system and is characterized by the absence of atypical or malignant cytological and architectural features, and absence of invasive features or metastatic potential.

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 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About D33Overview

What is the ICD-10 code for benign neoplasm of brain and other parts of central nervous system?

D33 is the ICD-10-CM category for benign neoplasm of brain and other parts of central nervous system, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

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.

Can D33 be reported with a code from D18.0?

Not as a rule. The Excludes1 note on D33 lists "angioma (D18.0-)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).