Cool. I've heard that some airlines and travel agencies started accepting payments in Bitcoin. But a possibility to use Bitcoin for paying treatment is something new.
Not only limited to travel/airline industry but also with other industries as well where they do integrate Bitcoin or simply crypto payments into their services.
When it comes to integration then those payment processors would be one of the things needed and of course your awareness towards crypto volatility..
You can freely add up crypto payments into your business but of course you would need to find out first if crypto isnt something being banned nor prohibited into your country
Choices of crpyto payment processors had been given above.Theres no need for repitition.