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ICD-10 Guide
ICD-10 CodesC71.1

C71.1

Billable

Malignant neoplasm of frontal lobe

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

Code Description

ICD-10 C71.1 is a billable code used to indicate a diagnosis of malignant neoplasm of frontal lobe.

Key Diagnostic Point:

C71.1 refers to a malignant neoplasm located in the frontal lobe of the brain, which is a critical area responsible for various higher cognitive functions, including reasoning, problem-solving, and emotional regulation. These tumors can arise from glial cells (gliomas), meningeal tissue (meningiomas), or can be metastatic from other primary cancers. Symptoms may include changes in personality, cognitive decline, seizures, and motor deficits, depending on the tumor's size and location. Imaging studies, particularly MRI, are essential for diagnosis, revealing the tumor's size, location, and effect on surrounding brain structures. Molecular markers, such as IDH1/2 mutations and 1p/19q co-deletion status, can provide prognostic information and guide treatment decisions. Treatment typically involves a multidisciplinary approach, including surgical resection, radiation therapy, and chemotherapy, tailored to the tumor's characteristics and the patient's overall health.

Code Complexity Analysis

Complexity Rating: High

High Complexity

Complexity Factors

  • Variability in tumor types and histology
  • Need for precise imaging documentation
  • Complexity of treatment regimens
  • Potential for metastasis from other sites

Audit Risk Factors

  • Inadequate documentation of imaging studies
  • Failure to document molecular marker testing
  • Misclassification of tumor type or grade
  • Lack of clarity in treatment plans

Specialty Focus

Medical Specialties

Neurosurgery

Documentation Requirements

Detailed operative reports, imaging studies, and pathology results.

Common Clinical Scenarios

Surgical resection of frontal lobe tumors, management of post-operative complications.

Billing Considerations

Ensure accurate coding of tumor type and extent of resection.

Oncology

Documentation Requirements

Comprehensive treatment plans, including chemotherapy and radiation therapy details.

Common Clinical Scenarios

Management of malignant brain tumors, including adjuvant therapies.

Billing Considerations

Document molecular markers and treatment response for accurate coding.

Coding Guidelines

Inclusion Criteria

Use C71.1 When
  • Follow the official ICD
  • CM coding guidelines, ensuring accurate documentation of the tumor's location, type, and any associated complications
  • Include relevant imaging and pathology reports to support coding decisions

Exclusion Criteria

Do NOT use C71.1 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

61510CPT Code

Craniotomy, excision of brain tumor

Clinical Scenario

Used during surgical resection of a frontal lobe tumor.

Documentation Requirements

Operative report detailing the procedure and findings.

Specialty Considerations

Neurosurgeons must document tumor type and extent of resection.

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. C71.1 provides a clear distinction for malignant neoplasms of the frontal lobe, which 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. C71.1 provides a clear distinction for malignant neoplasms of the frontal lobe, which aids in treatment planning and research.

Reimbursement & Billing Impact

reimbursement processes. C71.1 provides a clear distinction for malignant neoplasms of the frontal lobe, which aids in treatment planning and research.

Resources

Clinical References

  • •
    American Brain Tumor Association

Coding & Billing References

  • •
    American Brain Tumor Association

Frequently Asked Questions

What imaging studies are required for C71.1?

MRI is the preferred imaging modality for diagnosing and assessing malignant neoplasms of the frontal lobe, providing detailed information about tumor size, location, and effects on surrounding structures.