Most Western passports (US, Canada, UK, EU, Australia, Japan) don't need visa for short tourism stays. But medical procedures technically fall under 'Medical Treatment' category.
For US/EU/UK/Japan: 90-day visa-free OK for single short procedures. No separate medical visa needed unless stay >90 days.
For China, Russia, India, Thailand, Indonesia, Vietnam, Philippines: C-3-3 medical visa required. Apply via Korean embassy + invitation letter from registered Korean clinic.
Documents: passport (6+ months validity), hospital invitation letter, proof of financial means ($500+ per day), travel insurance covering medical procedures.
Fast-track: If treated by KTO-designated 'outstanding facilitator', waive affidavit of financial support. e-Visa issued in 5–10 days.
Processing time: 5–15 days standard. Rush service $100–200 extra through some facilitators.
Multi-entry option: Medical visa can be issued multi-entry for 1 year, allowing follow-up visits without re-applying.