Do I need to tell immigration if I change my travel insurance after approval?

No, you do not need to notify immigration. Vietnam does not require travel insurance for entry, and a change of provider after approval is not something the visa system tracks.

Keep the new policy documents with you in case a hotel, airline or tour provider asks for proof. If you listed insurance details on the form because a field asked for them, your visa remains valid even if the policy details no longer match.

Travel insurance is still wise, because hospital care for foreigners can be costly, and it should cover medical evacuation. Check that it covers activities such as motorbike riding if you plan to ride.

If you change anything that appears on your visa, such as the name or passport number, that is a different matter, and a new e-visa may be needed. See our e-visa guide for what the visa records, or apply for a new e-visa if a core detail has changed.