Confidentiality

Confidentiality is a doctor's duty to keep what a patient tells them private.

Updated 12 October 2026 (1 minute read)

Summary

  • Patients are only honest with their doctors if they trust that the information stays private.
  • The duty continues after the patient has died.
  • It has limits. A doctor may share information when the patient consents, when the law requires it, or when keeping it secret would put someone at serious risk of harm.
  • Legal requirements include reporting certain infectious diseases and obeying a court order.

In practice

In Hong Kong

  • The Medical Council of Hong Kong's code says a doctor should get the patient's consent before giving medical information to a third party outside the referral (section 1.4.1).
  • It allows disclosure without consent in exceptional circumstances, such as to prevent serious harm to the patient or others, or where the law requires it (section 1.4.2).
  • Where a spouse or partner is at risk from a patient's serious infection, the doctor should urgently seek the patient's consent. If it is refused, the doctor may consider it a duty to tell the partner (section 32.3).

Interview questions

  • Why is confidentiality so important in medicine?
  • When is a doctor allowed to break confidentiality?
  • A patient with epilepsy tells you he is still driving. What do you do?

Sources

  1. Infosecurity Magazineinfosecurity-magazine.com/…/synnovis-publish-nhs-patient-data
  2. GOV.UKgov.uk/…/the-caldicott-principles
  3. Medical Council of Hong Kongmchk.org.hk/…/Code_of_Professional_Conduct_%28English_Version%29_%28Revise

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