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ICD-10 Guide
ICD-10 CodesC71.5

C71.5

Billable

Malignant neoplasm of cerebral ventricle

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/05/2025

Code Description

ICD-10 C71.5 is a billable code used to indicate a diagnosis of malignant neoplasm of cerebral ventricle.

Key Diagnostic Point:

C71.5 refers to a malignant neoplasm located in the cerebral ventricle, which is a critical component of the central nervous system (CNS). These tumors can arise from various cell types, including glial cells, ependymal cells, and other neural tissues. The cerebral ventricles are fluid-filled cavities within the brain that play a vital role in the production and circulation of cerebrospinal fluid (CSF). Malignant neoplasms in this area can lead to significant neurological deficits due to their impact on CSF flow and brain function. Symptoms may include headaches, seizures, cognitive changes, and motor deficits, depending on the tumor's size and location. Imaging studies, particularly MRI, are essential for diagnosis, allowing for visualization of the tumor's characteristics and its effects on surrounding brain structures. Molecular markers, such as IDH mutations and 1p/19q co-deletion status, can provide prognostic information and guide treatment decisions. Treatment typically involves a multidisciplinary approach, including surgery, radiation therapy, and chemotherapy, tailored to the tumor's specific characteristics and the patient's overall health.

Code Complexity Analysis

Complexity Rating: High

High Complexity

Complexity Factors

  • Variability in tumor histology and grading
  • Need for precise localization within the cerebral ventricle
  • Potential for overlapping symptoms with other CNS conditions
  • Complexity of treatment regimens and multidisciplinary care

Audit Risk Factors

  • Inadequate documentation of tumor type and grade
  • Failure to document imaging findings
  • Lack of clarity on treatment plans
  • Misclassification of tumor location

Specialty Focus

Medical Specialties

Neurosurgery

Documentation Requirements

Detailed operative reports, imaging studies, and pathology results.

Common Clinical Scenarios

Surgical resection of a tumor, post-operative complications, and follow-up imaging.

Billing Considerations

Ensure accurate coding of tumor size, location, and histology.

Oncology

Documentation Requirements

Comprehensive treatment plans, including chemotherapy and radiation therapy details.

Common Clinical Scenarios

Management of tumor recurrence, side effects of treatment, and palliative care.

Billing Considerations

Documentation of molecular markers and response to treatment is crucial.

Coding Guidelines

Inclusion Criteria

Use C71.5 When
  • Follow the official ICD
  • CM coding guidelines, ensuring accurate documentation of the tumor's location, histology, and any associated symptoms
  • Include relevant imaging and pathology reports to support the diagnosis

Exclusion Criteria

Do NOT use C71.5 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

61510CPT Code

Craniotomy for excision of brain tumor

Clinical Scenario

Used when a patient undergoes surgery for a malignant neoplasm of the cerebral ventricle.

Documentation Requirements

Operative report detailing the procedure, tumor type, and any complications.

Specialty Considerations

Neurosurgeons must document the extent of resection and any intraoperative findings.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for greater specificity in coding CNS malignancies, including C71.5. This specificity aids in better tracking of treatment outcomes and resource allocation.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for greater specificity in coding CNS malignancies, including C71.5. This specificity aids in better tracking of treatment outcomes and resource allocation.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for greater specificity in coding CNS malignancies, including C71.5. This specificity aids in better tracking of treatment outcomes and resource allocation.

Resources

Clinical References

  • •
    American Academy of Neurology
  • •
    National Cancer Institute

Coding & Billing References

  • •
    American Academy of Neurology
  • •
    National Cancer Institute

Frequently Asked Questions

What imaging is required for diagnosing C71.5?

MRI is the preferred imaging modality for diagnosing malignant neoplasms of the cerebral ventricle, providing detailed images of the tumor and its effects on surrounding structures.

How do molecular markers influence treatment for C71.5?

Molecular markers can provide prognostic information and guide treatment decisions, such as the use of targeted therapies or chemotherapy regimens.