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ICD-10 Guide
ICD-10 CodesC78.7

C78.7

Billable

Secondary malignant neoplasm of liver and intrahepatic bile duct

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

Code Description

ICD-10 C78.7 is a billable code used to indicate a diagnosis of secondary malignant neoplasm of liver and intrahepatic bile duct.

Key Diagnostic Point:

C78.7 refers to secondary malignant neoplasms that have metastasized to the liver and intrahepatic bile ducts from a primary cancer located elsewhere in the body. This condition is characterized by the presence of malignant cells in the liver or bile ducts that originated from a primary tumor, which may be unknown at the time of diagnosis. Common primary sites include the breast, lung, colon, and pancreas. The liver is a frequent site for metastasis due to its rich blood supply and the role it plays in filtering blood from the gastrointestinal tract. Patients may present with symptoms such as jaundice, abdominal pain, weight loss, and ascites. Staging of metastatic liver cancer is crucial for determining prognosis and treatment options, which may include palliative care aimed at symptom management rather than curative intent. Accurate coding requires thorough documentation of the primary cancer site, if known, and the extent of liver involvement, as this can influence treatment decisions and outcomes.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Determining the primary site of cancer, which may be unknown.
  • Differentiating between primary liver cancers and metastatic disease.
  • Staging considerations that impact treatment options.
  • Documentation requirements for palliative care versus curative intent.

Audit Risk Factors

  • Inadequate documentation of the primary cancer site.
  • Failure to document the extent of liver involvement.
  • Misclassification of primary versus secondary malignancy.
  • Inconsistent staging information.

Specialty Focus

Medical Specialties

Oncology

Documentation Requirements

Detailed history of the primary cancer, staging information, and treatment plans.

Common Clinical Scenarios

Patients with known primary cancers presenting with liver metastases.

Billing Considerations

Accurate documentation of the primary site and staging is critical for treatment planning.

Palliative Care

Documentation Requirements

Focus on symptom management, patient goals, and quality of life considerations.

Common Clinical Scenarios

Patients with advanced metastatic disease requiring symptom relief.

Billing Considerations

Documentation should reflect the intent of care and any discussions about end-of-life preferences.

Coding Guidelines

Inclusion Criteria

Use C78.7 When
  • According to ICD
  • 10 guidelines, C78
  • 7 should be used when there is clear documentation of metastatic disease to the liver or intrahepatic bile ducts
  • Coders must ensure that the primary cancer site is documented, if known, and that the extent of liver involvement is clearly stated

Exclusion Criteria

Do NOT use C78.7 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

49180CPT Code

Laparoscopic liver biopsy

Clinical Scenario

Used when a biopsy is needed to confirm metastatic disease.

Documentation Requirements

Indication for biopsy and results of imaging studies.

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. C78.7 provides a clear distinction between secondary liver malignancies and primary liver cancers, 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. C78.7 provides a clear distinction between secondary liver malignancies and primary liver cancers, which is crucial for treatment planning.

Reimbursement & Billing Impact

reimbursement processes. C78.7 provides a clear distinction between secondary liver malignancies and primary liver cancers, 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 is the significance of knowing the primary cancer site when coding C78.7?

Knowing the primary cancer site is crucial for accurate coding, as it influences treatment decisions, prognosis, and the overall management of the patient's care. It also helps in understanding the patient's cancer history and potential outcomes.