C13.0Postcricoid region
Code usage status
Primary diagnosis
May be used as the primary diagnosis
Apply only when it matches the confirmed diagnosis and the documented clinical record.
Specificity
Complete code in the classification
Use when the diagnosis matches and no exclusion applies.
- Chapter II
- Neoplasms
- Group C00-C97
- Malignant neoplasms U ác tính
- Official Vietnamese name
- U ác tính ở vùng sau sụn nhẫn
Related C13 codes
C13
Malignant neoplasm of hypopharynx
C13.1
Primary diagnosis candidate
Aryepiglottic fold, hypopharyngeal aspect
C13.2
Primary diagnosis candidate
Posterior wall of hypopharynx
C13.8
Primary diagnosis candidate
Overlapping lesion of hypopharynx
C13.9
Primary diagnosis candidate
Hypopharynx, 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.
