As previously stated, CPAP does NOT always equal code 3. Clinical judgment on pt. status determines code 3 or not. That and the status of your O2 supply
I imagine this has already been stated, but code status should be implemented based upon its ability to benefit the patient, regardless of what other tools are being used.
Actually CPAP can take a "crappy" patient and make them "stable". It is at this point that a non-emergent transport is quite appropriate; less anxiety for the patient and safer for all involved.