My “Medical Extension” for being sick with COVID was approved today with 14 day under consideration stamp. 60 days altogether which was surprising.
Documents we gave Chiang Mai Immigration:
1. Medical certificate from doctor signed saying I must quarantine for 10 days.
2. Power of attorney for friend to represent me. Hard to find at first. Link here: [members only]
3. Passport size photo.
4. A large photo we printed out of me in color.
5. Photo copy of my passport.
6. Photo copy of ID of person on power of attorney
6. Tm30
It was approved. They only returned the medical certificate for me to keep. I hope this helps someone.