ICD-10-CM Code D33.4

Benign neoplasm of spinal cord

Version 2021 Billable Code Neoplasm Benign

Valid for Submission

D33.4 is a billable code used to specify a medical diagnosis of benign neoplasm of spinal cord. The code is valid for the fiscal year 2021 for the submission of HIPAA-covered transactions. The ICD-10-CM code D33.4 might also be used to specify conditions or terms like benign neoplasm of cauda equina, benign neoplasm of extramedullary spinal cord, benign neoplasm of peripheral nerves of trunk, benign neoplasm of spinal cord, neoplasm of cauda equina, schwannoma of spinal cord, etc

The following anatomical sites found in the Table of Neoplasms apply to this code given the correct histological behavior: Neoplasm, neoplastic cauda equina ; Neoplasm, neoplastic conus medullaris ; Neoplasm, neoplastic cord (true) (vocal) spinal (cervical) (lumbar) (thoracic) ; Neoplasm, neoplastic filum terminale ; Neoplasm, neoplastic motor tract cauda equina ; Neoplasm, neoplastic motor tract spinal ; Neoplasm, neoplastic spine, spinal (column) cord (cervical) (lumbar) (sacral) (thoracic) ; etc

Short Description:Benign neoplasm of spinal cord
Long Description:Benign neoplasm of spinal cord


The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Benign neoplasm of cauda equina
  • Benign neoplasm of extramedullary spinal cord
  • Benign neoplasm of peripheral nerves of trunk
  • Benign neoplasm of spinal cord
  • Neoplasm of cauda equina
  • Schwannoma of spinal cord

Convert D33.4 to ICD-9

  • 225.3 - Benign neo spinal cord

Code Classification

  • Neoplasms (C00–D48)
    • Benign neoplasms, except benign neuroendocrine tumors (D10-D36)
      • Benign neoplasm of brain and oth prt central nervous system (D33)

Code History

  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
    (First year ICD-10-CM implemented into the HIPAA code set)
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021

Table of Neoplasms

The code D33.4 is included in the table of neoplasms by anatomical site. For each site there are six possible code numbers according to whether the neoplasm in question is malignant, benign, in situ, of uncertain behavior, or of unspecified nature. The description of the neoplasm will often indicate which of the six columns is appropriate.

Where such descriptors are not present, the remainder of the Index should be consulted where guidance is given to the appropriate column for each morphological (histological) variety listed. However, the guidance in the Index can be overridden if one of the descriptors mentioned above is present.

Neoplasm, neoplastic Malignant
CaInSitu Benign Uncertain
»Neoplasm, neoplastic
  »cauda equina
»Neoplasm, neoplastic
  »conus medullaris
»Neoplasm, neoplastic
  »cord (true) (vocal)
    »spinal (cervical) (lumbar) (thoracic)
»Neoplasm, neoplastic
  »filum terminale
»Neoplasm, neoplastic
  »motor tract
    »cauda equina
»Neoplasm, neoplastic
  »motor tract
»Neoplasm, neoplastic
  »spine, spinal (column)
    »cord (cervical) (lumbar) (sacral) (thoracic)

Information for Patients

Benign Tumors

Also called: Benign neoplasms, Noncancerous 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.

Tumors are made up of extra cells. Normally, cells grow and divide to form new cells as your body needs them. When cells grow old, they die, and new cells take their place. Sometimes, this process goes wrong. New cells form when your body does not need them, and old cells do not die when they should. These extra cells can divide without stopping and may form tumor.

Treatment often involves surgery. Benign tumors usually don't grow back.

NIH: National Cancer Institute

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Spinal Cord Diseases

Your spinal cord is a bundle of nerves that runs down the middle of your back. It carries signals back and forth between your body and your brain. It is protected by your vertebrae, which are the bone disks that make up your spine. If you have an accident that damages the vertebrae or other parts of the spine, this can also injure the spinal cord. Other spinal cord problems include

  • Tumors
  • Infections such as meningitis and polio
  • Inflammatory diseases
  • Autoimmune diseases
  • Degenerative diseases such as amyotrophic lateral sclerosis and spinal muscular atrophy

Symptoms vary but might include pain, numbness, loss of sensation and muscle weakness. These symptoms can occur around the spinal cord, and also in other areas such as your arms and legs. Treatments often include medicines and surgery.

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