What documents are required for a successful Destination Thailand Visa application for medical treatment?

My Successful DTV Medical Treatment Application – Complete Document List

DTV Medical Treatment Approved in 6 Days (Munich) – My Complete Application & Documents

Hi all,

I wanted to share my successful Destination Thailand Visa (DTV) – Medical Treatment application and hopefully help others who are planning to apply.

Applied at: Royal Thai Consulate-General in Muni h, Germany

Application submitted: June 3, 2026

Approved: June 9, 2026 (6 calendar days)

Additional document requests: None

Background

I applied under the Medical Treatment category for ongoing treatment of ME/CFS (Myalgic Encephalomyelitis / Chronic Fatigue Syndrome) with Post-Exertional Malaise (PEM) and several related chronic conditions.

I had already completed two treatment periods at the same Traditional Chinese Medicine PRIVAYE clinic in Bangkok earlier this year, during which my symptoms finally started to improve.

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Documents I submitted

1. Personal Cover Letter

I wrote a detailed cover letter explaining:

- My medical history.

- That I have suffered from ME/CFS and related chronic illnesses for approximately X years.

- That I have an officially recognized disability due to multiple chronic conditions.

- That I have tried numerous treatments in my home country without lasting success.

- That a specialist clinic confirmed there is currently no curative treatment for ME/CFS, and available therapies are mainly supportive.

- That I had previously been treated twice at the same clinic in Bangkok and experienced noticeable symptom improvements in fatigue, PEM, sleep, digestion, sinus symptoms, and overall functioning.

- Why I wanted to continue treatment at the same clinic.

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2. Medical Treatment Confirmation Letter

The clinic prepared a detailed confirmation letter containing:

- My personal information.

- Passport number.

- Diagnosis.

- Confirmation of previous treatment.

- Confirmation that I had been accepted for continued treatment.

- Description of the planned treatment.

- Expected treatment frequency.

- Confirmation that treatment requires my regular presence in Bangkok.

- Confirmation that my condition is chronic and requires long-term management.

- A long-term treatment plan covering approximately two years, divided into treatment phases.

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3. Detailed Treatment Plan

The clinic also provided a separate treatment schedule showing:

- Multiple treatment phases covering approximately TWO years.

- The first intensive treatment phase.

- Regular follow-up assessments.

- Long-term supportive treatment because of the chronic nature of ME/CFS.

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4. Proof of Payment

I prepaid 100,000 THB to the clinic and submitted:

- Deposit invoice.

- Wise transfer confirmation.

- Proof that the payment had been received by clinic.

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5. Previous Treatment Records

I included documentation showing that I had already received treatment at the clinic during two previous treatment periods.

This included:

- Medical certificate confirming previous treatment.

- Payment receipts.

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6. Clinic Documents

To demonstrate that the clinic is legitimate, I attached:

- Company registration.

- Department of Business Development (DBD) registration.

- Medical license.

- Clinic operating license.

- Professional certifications.

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7. Medical Documents

I submitted specialist medical reports from home country confirming:

- ME/CFS diagnosis.

- Post-Exertional Malaise (PEM).

- Cognitive impairment.

- Sleep disorders.

- Chronic sinus problems.

- Digestive disorders.

- Long-term functional impairment.

- That current evidence-based treatment options are very limited.

I also included official documentation confirming my disability.

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8. Financial Proof

I submitted:

- Bank statements.

- Payment slip from employeer

- Investment account statements.

- Proof that I held well above the required 500,000 THB equivalent. I actually had 1 million THB.

To make the review easier, I highlighted my income in yellow and explained the source of the payments.

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9. Additional Documents

I also attached:

- Yearly tax statement from 2025.

- Passport copy.

- Flight reservation.

- Accommodation booking.

- Proof of residence in home country.

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My advice

I believe the biggest reason my application went smoothly was that I tried to make the visa officer's job as easy as possible.

Everything was organized into clearly named PDF files with a table of contents. Related documents were grouped together (medical documents, clinic documents, financial documents, previous treatment records, etc.), so the officer could quickly find everything.

I also clearly described my sources of income and the amount I get per month (both employeer and health insurance).

If you're applying for a Medical DTV, I would strongly recommend including:

- A detailed cover letter.

- A comprehensive medical letter from the clinic.

- A structured treatment plan.

- Proof of payment.

- Previous treatment records (if applicable).

- Official clinic licensing documents.

- Strong financial evidence.

- Well-organized PDFs with clear filenames.

My application was approved in 7 calendar days, and I was not asked to provide any additional documents.

I hope this helps others preparing a Medical DTV application. Good luck to everyone applying!