Y52.1Calcium-channel blockers
Code usage status
Primary diagnosis
Must not 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.
- Group Y40-Y84
- Complications of medical and surgical care
- Official Vietnamese name
- Tác động bất lợi của thuốc chẹn kênh calci
Related Y52 codes
Y52
Agents primarily affecting the cardiovascular system
Y52.0
Cardiac-stimulant glycosides and drugs of similar action
Y52.2
Other antidysrhythmic drugs, not elsewhere classified
Y52.3
Coronary vasodilators, not elsewhere classified
Y52.4
Angiotensin- converting-enzyme inhibitors
Y52.5
Other antihypertensive drugs, not elsewhere classified
Y52.6
Antihyperlipidaemi c and antiarteriosclerotic drugs
Y52.7
Peripheral vasodilators
Y52.8
Antivaricose drugs, including sclerosing agents
Y52.9
Other and unspecified agents primarily affecting the cardiovascular system
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.
