H11.0Pterygium
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 VII
- Diseases of the eye and adnexa
- Group H10-H13
- Disorders of conjunctiva
- Official Vietnamese name
- Mộng thịt
- Additional WHO coding guidance
- Excl.: pseudopterygium
Related H11 codes
H11
Other disorders of conjunctiva
H11.1
Primary diagnosis candidate
Conjunctival degenerations and deposits
H11.2
Primary diagnosis candidate
Conjunctival scars
H11.3
Primary diagnosis candidate
Conjunctival haemorrhage
H11.4
Primary diagnosis candidate
Other conjunctival vascular disorders and cysts
H11.8
Primary diagnosis candidate
Other specified disorders of conjunctiva
H11.9
Primary diagnosis candidate
Disorder of conjunctiva, 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.
