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ICD-10 Guide
ICD-10 CodesChapter 2: NeoplasmsC71

C71

Billable

Malignant neoplasm of brain

Chapter 2:Neoplasms

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

Code Description

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

Key Diagnostic Point:

C71 refers to malignant neoplasms of the brain, which encompass a variety of primary brain tumors that arise from the central nervous system (CNS) tissues. These tumors can be classified into several histological types, including gliomas, meningiomas, and medulloblastomas, among others. The clinical presentation of brain tumors can vary widely, depending on their location, size, and growth rate. Common symptoms include headaches, seizures, cognitive changes, and focal neurological deficits. Imaging studies, particularly MRI and CT scans, are essential for diagnosis, providing detailed visualization of the tumor's size, location, and effect on surrounding brain structures. Molecular markers, such as IDH mutations and 1p/19q co-deletion status, play a crucial role in the classification and prognosis of certain brain tumors, particularly gliomas. Accurate coding of C71 requires comprehensive documentation of the tumor type, location, and any relevant imaging or molecular findings, as these factors significantly influence treatment decisions and patient outcomes.

Code Complexity Analysis

Complexity Rating: High

High Complexity

Complexity Factors

  • Variety of tumor types and subtypes
  • Need for precise documentation of tumor location and characteristics
  • Involvement of multiple specialties in diagnosis and treatment
  • Potential for overlapping symptoms with other neurological conditions

Audit Risk Factors

  • Inadequate documentation of tumor type and location
  • Failure to include imaging results in the medical record
  • Omission of molecular marker testing results
  • Misclassification of tumor grade or stage

Specialty Focus

Medical Specialties

Oncology

Documentation Requirements

Detailed pathology reports, imaging studies, and treatment plans.

Common Clinical Scenarios

Diagnosis and management of primary brain tumors, treatment planning, and follow-up care.

Billing Considerations

Ensure accurate coding of tumor type and stage, as treatment options vary significantly.

Neurology

Documentation Requirements

Neurological assessments, imaging results, and symptomatology.

Common Clinical Scenarios

Evaluation of neurological deficits, seizure management, and coordination of care with oncologists.

Billing Considerations

Document neurological function changes meticulously to support coding and treatment decisions.

Coding Guidelines

Inclusion Criteria

Use C71 When
  • Follow the official ICD
  • CM coding guidelines, ensuring accurate documentation of the tumor's location, type, and any relevant imaging or molecular findings
  • Include additional codes for associated symptoms or complications as necessary

Exclusion Criteria

Do NOT use C71 When
No specific exclusions found.

Related CPT Codes

61510CPT Code

Craniotomy for excision of brain tumor

Clinical Scenario

Used when a patient undergoes surgical intervention for a malignant brain tumor.

Documentation Requirements

Operative reports detailing the procedure and findings.

Specialty Considerations

Ensure coordination between neurosurgery and oncology for comprehensive care.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of brain tumors, improving the accuracy of data collection and reimbursement processes. C71 provides granularity that aids in treatment planning and research.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of brain tumors, improving the accuracy of data collection and reimbursement processes. C71 provides granularity that aids in treatment planning and research.

Reimbursement & Billing Impact

reimbursement processes. C71 provides granularity that aids in treatment planning and research.

Resources

Clinical References

  • •
    American Cancer Society - Brain Tumors

Coding & Billing References

  • •
    American Cancer Society - Brain Tumors

Frequently Asked Questions

What types of tumors are included under C71?

C71 encompasses various malignant brain tumors, including gliomas, meningiomas, and medulloblastomas, among others.

How do molecular markers affect coding for C71?

Molecular markers provide critical information for tumor classification and prognosis, which should be documented to support accurate coding.