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C50.919

Malignant neoplasm of unspecified site of unspecified female breast

Neoplasms Billable
Quick Reference
Breast cancer diagnosis without specification of location or laterality

Clinical Information

When to Use This Code

Breast cancer diagnosis without specification of location or laterality

Common Clinical Scenarios

  • Breast cancer diagnosis
  • Oncology treatment planning
  • Chemotherapy or radiation
  • Breast cancer surveillance

Documentation Requirements

  • Specify breast location when possible (upper outer quadrant, etc.)
  • Document laterality (right, left, bilateral)
  • Record histology (ductal, lobular), stage, grade
  • Note hormone receptor status (ER, PR, HER2)

Coding Guidelines

Inclusion Terms

These terms are included in this code:

Breast cancerBreast carcinomaMammary carcinoma

Exclusion Terms

Do NOT use this code for:

  • Benign breast lesion (D24.-)
  • Carcinoma in situ (D05.-)
  • Male breast cancer (C50.92-)

Coding Notes

Use site-specific codes when location documented
Always specify laterality when known
Code metastases separately

Related ICD-10 Codes

Consider these related codes based on patient presentation:

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Code Details

Code
C50.919
Category
Neoplasms
Billable Status
Billable

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