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v1.0.0
ICD-10 Guide
ICD-10 CodesC50.911

C50.911

Billable

Malignant neoplasm of unspecified site of right female breast

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

Code Description

ICD-10 C50.911 is a billable code used to indicate a diagnosis of malignant neoplasm of unspecified site of right female breast.

Key Diagnostic Point:

C50.911 refers to a malignant neoplasm located in the right female breast, where the specific site of the tumor is not specified. Breast cancer is a heterogeneous disease characterized by the uncontrolled growth of breast cells. It can be classified based on various factors, including hormone receptor status (estrogen and progesterone receptors) and HER2 status, which are critical for determining prognosis and treatment options. The staging of breast cancer is essential for treatment planning and is based on the size of the tumor, lymph node involvement, and the presence of metastasis. Treatment protocols may include surgery (lumpectomy or mastectomy), radiation therapy, chemotherapy, and targeted therapies, depending on the cancer's characteristics and stage. Accurate coding is crucial for appropriate treatment reimbursement and patient management.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Unspecified site may lead to ambiguity in treatment planning.
  • Variability in hormone receptor and HER2 status complicates coding.
  • Staging requires comprehensive documentation for accurate coding.
  • Potential for misclassification if additional details are not provided.

Audit Risk Factors

  • Inadequate documentation of tumor characteristics.
  • Failure to specify hormone receptor status.
  • Lack of staging information.
  • Misalignment between diagnosis and treatment codes.

Specialty Focus

Medical Specialties

Oncology

Documentation Requirements

Detailed pathology reports, imaging studies, and treatment plans.

Common Clinical Scenarios

Initial diagnosis, treatment planning, and follow-up care.

Billing Considerations

Ensure all tumor characteristics are documented for accurate coding.

Radiology

Documentation Requirements

Imaging reports detailing tumor size and location.

Common Clinical Scenarios

Diagnostic imaging for staging and treatment response.

Billing Considerations

Clear documentation of findings to support coding decisions.

Coding Guidelines

Inclusion Criteria

Use C50.911 When
  • Follow the official ICD
  • CM coding guidelines, ensuring that the code is used only when the specific site of the tumor is not documented
  • Include additional codes for hormone receptor status and staging when applicable

Exclusion Criteria

Do NOT use C50.911 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

19303CPT Code

Mastectomy, modified radical

Clinical Scenario

Performed for treatment of malignant neoplasm coded as C50.911.

Documentation Requirements

Operative report detailing the procedure and findings.

Specialty Considerations

Oncology and surgical documentation must align for accurate coding.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of breast cancer, improving the ability to track treatment outcomes and resource allocation. C50.911 provides a framework for coding when specific tumor sites are not documented, but it emphasizes the need for thorough documentation.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of breast cancer, improving the ability to track treatment outcomes and resource allocation. C50.911 provides a framework for coding when specific tumor sites are not documented, but it emphasizes the need for thorough documentation.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of breast cancer, improving the ability to track treatment outcomes and resource allocation. C50.911 provides a framework for coding when specific tumor sites are not documented, but it emphasizes the need for thorough documentation.

Resources

Clinical References

  • •
    American Cancer Society - Breast Cancer

Coding & Billing References

  • •
    American Cancer Society - Breast Cancer

Frequently Asked Questions

What should I do if the site of the tumor is specified later?

If the site is specified after initial coding, update the code to reflect the specific location using the appropriate C50 code.