Can You Extend a Thailand Medical Visa from Inside Bangkok? A Guide for Bangladeshi Patients

Your treatment is going well, but your visa is running out. Maybe surgery took longer than expected. Maybe your doctor wants you to stay for another round of tests or a follow-up procedure before you fly home. Whatever the reason, this is a situation that many Bangladeshi patients find themselves in, and the answer to the central question is yes, you can extend your stay inside Thailand without going back to Bangladesh first.

But there’s a critical detail that affects Bangladeshi patients specifically, one that most general visa guides don’t mention. How much extra time you can get, and how easily, depends entirely on which type of visa you entered on. Read this guide before you assume your extension will be automatic.

The Two Visa Types and Why the Difference Matters

Before explaining the extension process, it’s essential to understand the distinction between the two visa options available to Bangladeshi medical patients.

Non-Immigrant Visa Category “O” (Medical): This is the correct visa for patients coming to Thailand for treatment. It allows an initial stay of 60 to 90 days per entry. Importantly, holders of this visa can apply for extensions inside Thailand specifically for ongoing medical treatment, and those extensions can be granted for up to 1 year of total stay with the right documentation from their treating doctor.

Tourist Visa “TR”: Some Bangladeshi patients traveling for short check-ups or outpatient consultations use a tourist visa. It permits a 60-day initial stay. Here is the critical point: Bangladeshi passport holders on a tourist visa are only eligible for a 7-day extension inside Thailand, not the standard 30-day extension that most other nationalities receive. This is confirmed by Thai immigration policy, which lists Bangladesh alongside India, Pakistan, Nepal, Sri Lanka, Iran, Nigeria, Togo, and Uganda as nationalities subject to the 7-day rule on tourist visa extensions.

If you entered Thailand on a tourist visa expecting a 30-day extension to be available, plan around 7 days instead. This isn’t a slight. It’s an existing bilateral immigration arrangement, and the only way around it is to leave Thailand, re-enter on a proper Non-Immigrant O medical visa, or plan better before the next trip.

This is one of the reasons ThaiMediXpress consistently advises Bangladeshi patients coming for treatment (not just a check-up) to apply for the Non-Immigrant O medical visa before traveling, not a tourist visa. Our Thailand medical visa page covers how to apply for the right visa from Bangladesh. The full document checklist is on our documents required blog post.

Extending a Non-Immigrant O Medical Visa Inside Bangkok

If you entered Thailand on the correct Non-Immigrant O medical visa, extending your stay inside Bangkok is a manageable process. Here’s how it works.

What You Need to Extend:

The most important document is a letter from your treating doctor at Bumrungrad confirming that:

• You are currently receiving treatment or require further medical care
• The estimated duration of remaining treatment
• That it is medically necessary for you to remain in Thailand

This letter is the foundation of your extension application. Bumrungrad’s international patient team issues this letter routinely for admitted or active outpatients. If you’re being treated through ThaiMediXpress’s coordination, inform us that you need an extension letter and we’ll coordinate with Bumrungrad’s team.

Full document list for Non-Immigrant O extension:

• Original passport (must be valid for the duration of the extension requested)
• Completed TM.7 application form (available at any immigration office or downloadable from the Thai Immigration Bureau website)
• One recent passport-sized photograph, 4 x 6 cm, white background
• Photocopies of: passport information page, visa page, entry stamp page
• TM.30 receipt (proof of your current accommodation registration — more on this below)
• Doctor’s letter from Bumrungrad confirming ongoing medical necessity and estimated remaining treatment duration
• Extension fee: 1,900 THB, cash only

What Is the TM.30 and Why Does It Matter?

The TM.30 is a Thai immigration form that records where you are staying in Thailand. Under Thai law, accommodation providers (hotels, hospitals, apartments) must register foreign guests with immigration within 24 hours of check-in. Hotels do this automatically. If you’re staying in a serviced apartment or with a family member, it’s possible this wasn’t done, which can cause problems at the immigration office.

Before going for your extension, ask your hotel reception for your TM.30 receipt. If you’re staying in private accommodation, your landlord or host can submit the TM.30 online through the Thai Immigration Bureau’s portal, or you can do it yourself at the immigration office before submitting your extension application. Missing TM.30 is one of the most common reasons patients are sent away from immigration offices to return another day.

Where to Go in Bangkok

The main immigration office handling visa extensions in Bangkok is:

Immigration Bureau, Chaeng Wattana Government Complex, Building B Chaeng Wattana Road, Laksi District, Bangkok Office hours: Monday to Friday, 8:30 AM to 4:30 PM (closed for lunch 12:00 to 1:00 PM) Closed on Thai public holidays

This is the largest immigration office in Thailand, and it can be crowded. Arrive before 8:00 AM to take a queue number before the rush. Same-day processing is standard, but arriving after 10:00 AM can mean a very long wait.

An important practical note: Bumrungrad International Hospital is located in the Sukhumvit area, roughly 15 to 20 kilometers from Chaeng Wattana. Budget 30 to 45 minutes travel time by taxi or Grab in normal traffic. Allow more time during morning rush hours.

There is also a newer online pre-registration system through the Thai Immigration Bureau website that allows you to book a time slot before visiting. This significantly reduces waiting time if the system is working for your visa category on the day you apply. Ask Bumrungrad’s international patient team if they have current guidance on whether online pre-registration is available for medical visa extensions at the time of your visit.

How Long Does the Extension Take?

Most extensions are processed on the same day at Chaeng Wattana when you arrive early with all documents correct. The officer reviews your application, takes your photograph, and stamps your passport with the new permitted stay date.

Processing typically takes 1 to 3 hours from queue to stamp if you arrive early. Arriving after noon at Chaeng Wattana can push processing to the next working day.

How Much Extra Time Will You Get?

For Non-Immigrant O medical visa holders, the extension duration is at the immigration officer’s discretion based on the doctor’s letter. In practice, extensions are typically granted for:

• 30 days for shorter ongoing treatment
• 60 to 90 days for extended treatment or post-surgical recovery, if the doctor’s letter supports it
• Up to 1 year total for patients requiring ongoing treatment, renewable at the immigration office

The doctor’s letter is the key. If Bumrungrad’s letter states that you require a further 8 weeks of treatment and recovery, that gives the immigration officer a clear basis for granting 8 weeks. A vague letter produces a shorter extension.

Extending a Tourist Visa Inside Bangkok: The 7-Day Rule for Bangladeshis

If you entered Thailand on a tourist visa and your treatment is taking longer than expected, this is where the Bangladeshi-specific rule bites.

Bangladeshi passport holders are eligible for only a 7-day extension on a tourist visa at Thai immigration offices. This applies regardless of whether you entered on a 60-day Single Entry Tourist Visa or a Multiple Entry Tourist Visa. The 7-day extension costs the same fee of 1,900 THB.

For a patient who needs another 3 or 4 weeks in Bangkok, 7 extra days is not enough. Here are the realistic options:

Option 1: Leave Thailand and re-enter on a Non-Immigrant O medical visa

If your treatment can tolerate a brief departure and return, you can exit Thailand, apply for a Non-Immigrant O medical visa from the Royal Thai Embassy or Thai consulate in the country you visit (many patients do this via a short trip to a neighboring country), and re-enter Thailand on the correct visa. ThaiMediXpress can coordinate with Bumrungrad’s international patient office to provide the hospital letter needed for this new visa application.

Option 2: Apply for the correct visa before traveling next time

This is the lesson learned. For any future trip involving hospital admission, surgery, or treatment cycles, apply for the Non-Immigrant O medical visa from Bangladesh before departing. Our team at ThaiMediXpress advises on this and assists with the application at no charge.

Option 3: Use the 7-day extension and manage travel accordingly

If 7 additional days are enough, take the extension and plan your return accordingly. This may work for patients who are almost at the end of treatment and simply need a few more days before the doctor clears them to fly.

Re-Entry Permits: If You Need to Leave Thailand During Your Stay

If you are in the middle of treatment and need to leave Thailand briefly (for example, to return to Bangladesh for an important family matter and then come back to continue treatment), you must get a re-entry permit before leaving. If you leave without one, your existing visa is cancelled upon exit and you’ll need to apply for a new one from scratch.

Re-entry permits are available at:

• Thai immigration offices, including Chaeng Wattana
• International airports at the immigration booths near departure gates (ask before passing through passport control)

Costs in 2026:

• Single re-entry permit: 1,000 THB (allows one exit and return)
• Multiple re-entry permit: 3,800 THB (unlimited exits and returns during the visa period)

If you’re mid-treatment and have any possibility of needing to travel in and out of Thailand, get the multiple re-entry permit when you first arrive or when you get your extension. Forgetting this is one of the more costly administrative mistakes medical patients make.

90-Day Reporting for Long-Stay Patients

If your total stay in Thailand on a Non-Immigrant O medical visa exceeds 90 consecutive days, you are required to report your current address to Thai immigration every 90 days. This is not an extension of your visa. It’s a notification of where you are staying.

This can be done:

• In person at Chaeng Wattana or any provincial immigration office
• By mail (send the required form and documents to Immigration Division 1)
• Online through the Thai Immigration Bureau’s 90-day reporting portal

The 90-day report is due within 15 days before or 7 days after the 90-day deadline. Missing it results in a 2,000 THB fine. Bumrungrad’s international patient team is experienced with this and can advise patients on the reporting requirement and process during long-stay admissions.

Overstaying: Never Do It

This needs to be said directly. Overstaying your permitted stay in Thailand, even by one day, results in a fine of 500 THB per day (capped at 20,000 THB), which is payable at the airport when you leave. Beyond the fine, an overstay goes on your immigration record and can affect future visa applications for Thailand and other countries.

For patients who are unwell and lose track of dates, or for families managing a very sick loved one, this can happen unintentionally. If you believe you may overstay due to a medical emergency, contact Bumrungrad’s international patient team immediately. Hospitals can communicate directly with Thai immigration in genuine medical crisis situations to avoid a technical overstay from counting against the patient’s record.

Never stay beyond your permitted date without taking action. If your extension hasn’t come through and your date is approaching, ask Bumrungrad’s team for help rather than waiting passively.

How Thai Medi Xpress Helps During Your Stay

Our coordination service doesn’t stop when you arrive at Bumrungrad. For patients who need visa extensions during their treatment, we assist by:

• Coordinating the extension letter from Bumrungrad’s treating doctor
• Advising on which immigration office to visit and when
• Providing the document checklist specific to your visa type and situation
• Helping you understand re-entry permit requirements if you need to travel
• Advising on the TM.30 requirement if you’re staying outside a hotel

Contact Our Dhaka office at 01844047060 or our Chittagong office at 01844 047063 even after you’ve traveled to Bangkok. We remain available to assist throughout your treatment journey.

Frequently Asked Questions

I entered Thailand on a Tourist Visa and need more than 7 extra days. What are my options?

Your realistic options are to leave Thailand and re-enter on a Non-Immigrant O medical visa with the Bumrungrad hospital letter, or to plan your return to Bangladesh around what 7 days allows. If you’re mid-treatment, discuss with Bumrungrad’s team whether a brief departure and return is clinically feasible. Thai Medi Xpress can coordinate the new visa documentation during your absence.

Who gets me the extension letter from Bumrungrad?

Your treating doctor or Bumrungrad’s international patient team issues the letter. Thai Medi Xpress coordinates this on your behalf as part of our ongoing support service. Inform us as early as possible when you know an extension will be needed. Last-minute requests add stress to an already demanding situation.

Can I apply for the extension online without going to the immigration office?

Thailand’s Immigration Bureau launched an e-Extension system in late 2025 that is being progressively expanded to more visa categories and provinces. Medical treatment extensions are listed among the supported categories. Check the current status of this system at the time of your visit, as availability varies. Even with online pre-registration, your passport must be presented in person on the appointment date.

What if my doctor says I need to stay an extra 3 months?

A doctor’s letter confirming 3 months of ongoing medical necessity provides the basis for requesting a 90-day extension. The immigration officer makes the final decision, but genuine medical need supported by a clear hospital letter is treated sympathetically. There is no hard cap on extensions for medical treatment holders; the total stay can potentially reach 1 year with consecutive extensions and appropriate documentation.

Do accompanying family members need to extend their visas separately?

Yes. Each person’s visa is individual. Family members accompanying a patient need to apply for their own extensions at the same immigration office, with documentation showing their relationship to the patient and the patient’s ongoing treatment letter. Each extension costs 1,900 THB per person.

What is the cost of extending a medical visa inside Bangkok?

The standard extension fee is 1,900 THB, payable in cash only at the immigration office. Bring at least 2,500 THB to cover the fee plus photocopies and any other minor costs at the office. If you use a visa agent to handle the process on your behalf, their service fee is typically 1,000 to 3,000 THB extra.

Thai Medi Xpress is the official referral partner of Bumrungrad International Hospital in Bangladesh, operating from Dhaka and Chittagong since 2018. For visa guidance, visit our Thailand medical visa page or our documents required guide. Contact us at 01844047060 (Dhaka) or 01844 047063 (Chittagong). All coordination services are completely free.