Generally speaking, it doesn't matter which side to roll the person on. If there is an obstruction in the way, that will dictate which side the person can be rolled. Also, you will want to take into consideration injuries which may affect the side the person is rolled on. More severe injuries you may want to roll on the injured side for support. Otherwise, roll onto the uninjured side.
When a lay person with no CPR training is on the phone with 911 and the dispatcher is giving instructions to the lay rescuer
When there is no professional with emergency medical training is on the scene, in the field (car accident, sudden collapse by somebody in a residential home, etc.) the a lay person who knows CPR would be needed,
Because if they vomit, you don't want them to aspirate it.
Lay them on there side if they stop breathing perform CPR call 911
To make it easier for the lay person.
Code means someone is not breathing or their heart has stopped (which is not breathing as well). Full code CPR is probably a medical term for performing CPR on a patient that has coded. There is not, per se, a term for CPR that is a "full code CPR". You can take CPR for the lay person or professional.
For lay CPR, no pulse check is required.
See the related link for how to give CPR to an Adult, Child, or Infant. ECC 2005 standardized the ratio for the lay person to 30 compressions / 2 breaths for an Adult, Child, or Infant.
CPR for the lay person, denoted just CPR, there is no longer a pulse check for an adult, so once CPR is started, it will be continued unless the person begins to show signs of life. In CPR-FPR (CPR for the Professional Rescuer) there is still a circulation check, so RB at 1 breath / 5 seconds is part of that certification. To specifically answer your question, most people would do CPR and not check for a pulse on an adult, because it is not part of the curriculum. For a professional person, they would perform rescue breathing with a pulse and CPR without a pulse.
green side up
It is safe it sleep on either side. They tell you its best to lay on your left because your kidneys drain better when you lay on the left. Just don't lay flat on your back
Left Side (Answered for Medical Mayhem)