2024 ICD-10-CM Diagnosis Code D43.4

Neoplasm of uncertain behavior of spinal cord

ICD-10-CM Code:
Short Description:
Neoplasm of uncertain behavior of spinal cord
Is Billable?
Yes - Valid for Submission
Chronic Condition Indicator: [1]
Code Navigator:

Code Classification

  • Neoplasms
    • Neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes
      • Neoplasm of uncertain behavior of brain and cnsl

D43.4 is a billable diagnosis code used to specify a medical diagnosis of neoplasm of uncertain behavior of spinal cord. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024.

The following anatomical sites found in the Table of Neoplasms reference this diagnosis 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

Approximate Synonyms

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

  • Embryonal tumor of spinal cord
  • Ependymoma of spinal cord
  • Myxopapillary ependymoma of spinal cord
  • Neoplasm of cauda equina
  • Neoplasm of uncertain behavior of brain and spinal cord
  • Neoplasm of uncertain behavior of cauda equina
  • Neoplasm of uncertain behavior of spinal cord
  • Sacrococcygeal teratoma

Clinical Classification

Convert D43.4 to ICD-9-CM

  • ICD-9-CM Code: 237.5 - Unc beh neo brain/spinal
    Approximate Flag - The approximate mapping means there is not an exact match between the ICD-10 and ICD-9 codes and the mapped code is not a precise representation of the original code.

Table of Neoplasms

This code is referenced 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
C72.1C79.49 D33.4D43.4D49.7
»Neoplasm, neoplastic
  »conus medullaris
C72.0C79.49 D33.4D43.4D49.7
»Neoplasm, neoplastic
  »cord (true) (vocal)
    »spinal (cervical) (lumbar) (thoracic)
C72.0C79.49 D33.4D43.4D49.7
»Neoplasm, neoplastic
  »filum terminale
C72.0C79.49 D33.4D43.4D49.7
»Neoplasm, neoplastic
  »motor tract
    »cauda equina
C72.1C79.49 D33.4D43.4D49.7
»Neoplasm, neoplastic
  »motor tract
C72.0C79.49 D33.4D43.4D49.7
»Neoplasm, neoplastic
  »spine, spinal (column)
    »cord (cervical) (lumbar) (sacral) (thoracic)
C72.0C79.49 D33.4D43.4D49.7

Patient Education

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.

[Learn More in MedlinePlus]

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.


[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.