DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

D33 Benign neoplasm of brain and other parts of central nervous system

  • Header · not billable

D33 is not billable. The category heads 7 billable codes in FY2027: the 7 codes directly below it.

Index → code

  • Neuromaoptic (nerve) → D33.3
  • Neuromaacoustic (nerve) → D33.3
  • Neurilemmomaacoustic (nerve) → D33.3

Where it sits

  1. Chapter 2 Neoplasms (C00-D49)
  2. D10-D36 Benign neoplasms, except benign neuroendocrine tumors (D10-D36)
  3. D33 Benign neoplasm of brain and other parts of central nervous system
Billable codes
7
Subdivisions
7
CC / MCC codes
0 / 0
HCC V28 codes
7
New FY2027
0
Index entries
6

Codes in D33

  1. D33.0
    Benign neoplasm of brain, supratentorial
    Billable23
    Inclusion terms 6, Excludes1 1

    Inclusion terms

    • Benign neoplasm of cerebral ventricle
    • Benign neoplasm of cerebrum
    • Benign neoplasm of frontal lobe
    • Benign neoplasm of occipital lobe
    • Benign neoplasm of parietal lobe
    • Benign neoplasm of temporal lobe

    Excludes1

    • benign neoplasm of fourth ventricle (D33.1) D33.1
  2. D33.1
    Benign neoplasm of brain, infratentorial
    Billable23
    Inclusion terms 3

    Inclusion terms

    • Benign neoplasm of brain stem
    • Benign neoplasm of cerebellum
    • Benign neoplasm of fourth ventricle
  3. D33.2
    Benign neoplasm of brain, unspecified
    Billable23
  4. D33.3
    Benign neoplasm of cranial nerves
    Billable23
    Inclusion terms 1

    Inclusion terms

    • Benign neoplasm of olfactory bulb
  5. D33.4
    Benign neoplasm of spinal cord
    Billable23
  6. D33.7
    Benign neoplasm of other specified parts of central nervous system
    Billable23
  7. D33.9
    Benign neoplasm of central nervous system, unspecified
    Billable23
    Inclusion terms 1

    Inclusion terms

    • Benign neoplasm of nervous system (central) NOS

Sources of each column.

Instructions

At D33

Excludes1

  • angioma (D18.0-) D18.0
  • benign neoplasm of meninges (D32.-) D32
  • benign neoplasm of peripheral nerves and autonomic nervous system (D36.1-) D36.1
  • hemangioma (D18.0-) D18.0
  • neurofibromatosis (Q85.0-) Q85.0
  • retro-ocular benign neoplasm (D31.6-) D31.6

Notes that also apply

Chapter 2 instructions (Notes 8): printed on the chapter 2 page.

Index entries

  • Papillomachoroid plexus (lateral ventricle) (third ventricle) → D33.0
  • Neurilemmomaacoustic (nerve) → D33.3
  • Neuromaacoustic (nerve) → D33.3
  • Neuromaoptic (nerve) → D33.3
  • Papillomachoroid plexus (lateral ventricle) (third ventricle)fourth ventricle → D33.1
  • Ependymoma (epithelial) (malignant)benignunspecified site → D33.2

NCHS Alphabetic Index. Index first, then the Tabular List.

Hierarchy