C50Malignant neoplasm of breast
Code usage status
Primary diagnosis
Select a more specific code
Apply only when it matches the confirmed diagnosis and the documented clinical record.
Specificity
Do not use C50 directly
Use the most specific code supported by the record.
- Chapter II
- Neoplasms
- Group C00-C97
- Malignant neoplasms U ác tính
- Official Vietnamese name
- U ác tính ở vú
- Additional WHO coding guidance
- Incl.: connective tissue of breast Excl.: skin of breast (C43.5, C44.5)
Related C50 codes
C50.0
Primary diagnosis candidate
Nipple and areola
C50.1
Primary diagnosis candidate
Central portion of breast
C50.2
Primary diagnosis candidate
Upper-inner quadrant of breast
C50.3
Primary diagnosis candidate
Lower-inner quadrant of breast
C50.4
Primary diagnosis candidate
Upper-outer quadrant of breast
C50.5
Primary diagnosis candidate
Lower-outer quadrant of breast
C50.6
Primary diagnosis candidate
Axillary tail of breast
C50.8
Primary diagnosis candidate
Overlapping lesion of breast
C50.9
Primary diagnosis candidate
Breast, unspecified
Clinical record checklist
View coding guide →- Confirm that the code matches the final documented diagnosis.
- Use one primary-diagnosis code and record only relevant additional conditions.
- Review Ministry indicators, inclusions, exclusions and notes.
- Do not infer a diagnosis beyond the clinical record.
2026 regulatory basis
Indicators are taken from columns 24–29 of the classification accompanying Circular 06/2026/TT-BYT, cross-referenced with Decision 1849/QĐ-BYT and Official Dispatch 4059/BYT-BH.
