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v1.0.0
ICD-10 Guide
ICD-10 CodesC77.0

C77.0

Billable

Secondary and unspecified malignant neoplasm of lymph nodes of head, face and neck

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

Code Description

ICD-10 C77.0 is a billable code used to indicate a diagnosis of secondary and unspecified malignant neoplasm of lymph nodes of head, face and neck.

Key Diagnostic Point:

C77.0 refers to secondary malignant neoplasms that have metastasized to the lymph nodes located in the head, face, and neck regions. This code is utilized when the primary site of the cancer is unknown or unspecified, which is common in cases where the patient presents with lymphadenopathy but has not undergone extensive diagnostic workup to identify the primary tumor. The lymph nodes in these areas can be affected by various malignancies, including those originating from the breast, lung, gastrointestinal tract, or melanoma. The clinical presentation may include swollen lymph nodes, pain, or discomfort in the affected areas. Staging of the disease is crucial, as it helps determine the extent of metastasis and guides treatment options. Palliative care considerations are also significant, focusing on symptom management and improving the quality of life for patients with advanced disease. Accurate coding is essential for appropriate treatment planning and reimbursement.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Determining the primary site of cancer can be challenging.
  • Need for comprehensive documentation to support the diagnosis.
  • Variability in clinical presentation and staging.
  • Potential for multiple malignancies complicating coding.

Audit Risk Factors

  • Insufficient documentation of the primary cancer site.
  • Inconsistent staging information.
  • Lack of clarity in the clinical notes regarding the nature of lymphadenopathy.
  • Failure to document palliative care considerations.

Specialty Focus

Medical Specialties

Oncology

Documentation Requirements

Detailed pathology reports, imaging studies, and treatment plans.

Common Clinical Scenarios

Patients presenting with lymphadenopathy and unknown primary malignancy.

Billing Considerations

Ensure all diagnostic tests and findings are documented to support coding.

Palliative Care

Documentation Requirements

Comprehensive symptom management plans and patient assessments.

Common Clinical Scenarios

Patients with advanced metastatic disease requiring symptom relief.

Billing Considerations

Documenting the goals of care and patient preferences is crucial.

Coding Guidelines

Inclusion Criteria

Use C77.0 When
  • According to the ICD
  • CM coding guidelines, C77
  • 0 should be used when the malignancy is confirmed as secondary and the primary site is unknown
  • Coders must ensure that the documentation supports the diagnosis of metastatic disease and that all relevant clinical information is included

Exclusion Criteria

Do NOT use C77.0 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

38500CPT Code

Biopsy of lymph nodes

Clinical Scenario

When a biopsy is performed to confirm metastatic disease in lymph nodes.

Documentation Requirements

Pathology report confirming malignancy and indication for biopsy.

Specialty Considerations

Oncology specialists should ensure that the biopsy results are clearly linked to the diagnosis.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of metastatic diseases, improving the accuracy of data collection and reimbursement processes. C77.0 provides a clear distinction between secondary and primary malignancies, which is crucial for treatment planning.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of metastatic diseases, improving the accuracy of data collection and reimbursement processes. C77.0 provides a clear distinction between secondary and primary malignancies, which is crucial for treatment planning.

Reimbursement & Billing Impact

reimbursement processes. C77.0 provides a clear distinction between secondary and primary malignancies, which is crucial for treatment planning.

Resources

Clinical References

  • •
    ICD-10-CM Official Guidelines for Coding and Reporting

Coding & Billing References

  • •
    ICD-10-CM Official Guidelines for Coding and Reporting

Frequently Asked Questions

What should I document to support the use of C77.0?

You should document the presence of lymphadenopathy, any imaging studies performed, biopsy results, and the absence of an identified primary tumor. Additionally, include any relevant history of malignancy.