To be more specific:
All specified anatomical areas will be covered at all times, per state law NAC.640C.340 and local, jurisdictional laws in which I practice (Clark County § 7.08.045.g and Cities of Las Vegas LVMC 6.52.090.e & Henderson HMC 4.84.150.d).
I uncover areas -individually- on which I am working and then re-drape them when moving on to the next area – for example:

Sample Massage Therapy Session:
back/neckfirst leg (posterior) → second leg (posterior) →
[you flip over]
first leg (anterior) → second leg (anterior) → [abdomen, upon request] → first arm (anterior) → second arm (anterior) → neck/head

Tags: city, county, covering, draping, laws, protocol, state