2024 ICD-10-CM Diagnosis Code D33.9
Benign neoplasm of central nervous system, unspecified
- ICD-10-CM Code:
- D33.9
- ICD-10 Code for:
- Benign neoplasm of central nervous system, unspecified
- Is Billable?
- Yes - Valid for Submission
- Chronic Condition Indicator: [1]
- Not chronic
- Code Navigator:
D33.9 is a billable diagnosis code used to specify a medical diagnosis of benign neoplasm of central nervous system, unspecified. 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 epidural or Neoplasm, neoplastic extradural or Neoplasm, neoplastic motor tract or Neoplasm, neoplastic nervous system (central) or Neoplasm, neoplastic parasellar .
Unspecified diagnosis codes like D33.9 are acceptable when clinical information is unknown or not available about a particular condition. Although a more specific code is preferable, unspecified codes should be used when such codes most accurately reflect what is known about a patient's condition. Specific diagnosis codes should not be used if not supported by the patient's medical record.
Approximate Synonyms
The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:
- Benign ependymoma of central nervous system
- Benign neoplasm of central nervous system
- Benign neoplasm of nervous system
- Extraneural perineurioma
- Gangliocytoma of central nervous system
- Intraneural perineurioma
- Perineurioma
- Perineurioma
- Tumor of spinal nerve and sheath
- Tumor of spinal nerve and sheath
Clinical Classification
Clinical Category is Benign neoplasms
- CCSR Category Code: NEO073
- Inpatient Default CCSR: Y - Yes, default inpatient assignment for principal diagnosis or first-listed diagnosis.
- Outpatient Default CCSR: Y - Yes, default outpatient assignment for principal diagnosis or first-listed diagnosis.
Tabular List of Diseases and Injuries
The following annotation back-references are applicable to this diagnosis code. The Tabular List of Diseases and Injuries is a list of ICD-10-CM codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more.
Inclusion Terms
Inclusion TermsThese terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
- Benign neoplasm of nervous system (central) NOS
Convert D33.9 to ICD-9-CM
- ICD-9-CM Code: 225.9 - Benign neo nerv sys NOS
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 Primary |
Malignant Secondary |
CaInSitu | Benign | Uncertain Behavior |
Unspecified Behavior |
|---|---|---|---|---|---|---|
| »Neoplasm, neoplastic »epidural | C72.9 | C79.49 | D33.9 | D43.9 | D49.7 | |
| »Neoplasm, neoplastic »extradural | C72.9 | C79.49 | D33.9 | D43.9 | D49.7 | |
| »Neoplasm, neoplastic »motor tract | C72.9 | C79.49 | D33.9 | D43.9 | D49.7 | |
| »Neoplasm, neoplastic »nervous system (central) | C72.9 | C79.40 | D33.9 | D43.9 | D49.7 | |
| »Neoplasm, neoplastic »parasellar | C72.9 | C79.49 | D33.9 | D43.8 | D49.7 |
Patient Education
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.
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
[Learn More in MedlinePlus]
Brain Tumors-Patient Version
Learn about brain and spinal cord tumor risk factors, symptoms, tests to diagnose, factors affecting prognosis, and treatment.[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.
Footnotes
[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.