What Documents Are Required for a Medical Treatment Extension Visa in Thailand?

For a medical treatment extension visa in Thailand you need: first page of your passport, latest entry stamp, TM30 proof of address, and a doctor's note that clearly states your appointment and the medical reason you must stay longer. Approval ultimately rests on the strength of that doctor's note and the immigration officer's decision.

The Specifics

• First page of your passport (copy)
• The most recent entry stamp in your passport (copy)
• TM30 – official proof of address, normally supplied by your landlord or hotel receptionist
• A doctor's note written by the treating physician in Thailand stating the appointment schedule and the medical reason you need to remain in the country

Immigration also expects supporting medical documentation. This includes copies of medical reports and/or documents from the doctor who has been treating you in your home country, correspondence or documents from the doctor or health facility (especially if treatment is linked to the U.S. or your home country), and clear documentation showing how long the treatment is expected to take.

Expert Tips from Thai Kru Visa Agency

A short clinic visit or basic prescription will not meet the standard. Immigration looks for genuine, ongoing medical need. Make sure your Thai doctor's letter is specific, on clinic letterhead, and directly addresses both the diagnosis and the projected length of stay. Bring every relevant prior medical record so the officer can see continuity of care.

Processing time can vary. Read our guide on how long the medical treatment visa extension process takes in Thailand to set realistic expectations. Many applicants also find our article on why a quick clinic visit won't work for a real Medical DTV visa helpful before they prepare their file.

At Thai Kru Visa Agency we handle these applications every week. We check every document against current immigration practice so you avoid unnecessary trips to the office. If you need professional help preparing and submitting your medical treatment extension, our team is ready to assist.

Get help with your Medical Treatment DTV visa today →