I have had to clients suggest that if we dont kiss and just focus below the belt we will be safe. Now  I am not a doctor , though i have dressed up as a nurse a few times I am pretty certain that you can catch the virus from exchange of any bodily fluids.

I listen to a couple of medical podcasts and they seem to agree from semen and vag fluids no, rimming possibly.  

There are 2 different strains going around. S and and L strain.  One is more deadly than the other and young people are passing away from it.  I suggest that both client and provider where a mask at times during the session.

There is however a risk with rimming.

The word I keep hearing are reading about is droplets. They say not to allow these droplets to enter your eyes, nose or mouth. Never heard anything about where these droplets originate from so I’d be careful.

The latest info, as of 6/8/20, from the NYC Health Dept. warns that the virus has been found in the semen (and feces) of people with Covid-19. They do not know if the virus can be spread through vaginal or anal sex. The document with the same name as the Subject Line is updated as more is learned about the virus, so I encourage everyone to check it regularly.