If no claim is going out, you don't have to worry about a false claim, but that doesn't mean you shouldn't code the patient's account as accurately as you would any other. In my experience patient accounts can end up being billed somewhere at a later date, such as if the patient receives a retro-active coverage of some kind, so it's still important to have everything correct. Also, your employer may need to report their data internally or to an outside agency, so may be relying on you to code the accounts accurately even if they aren't billed to insurance. Your employer really should be the one to give you guidance on this, but in the absence of any specific policy in place, I would recommend you code all of your cash pay accounts as you would those billed to insurance.