I'm sorry to say in this version, the scene after he retires Zhora doesn't have Deckard saying his ID number, the officers manhandle him and check his ID discovering he's a Bladerunner.
In another part of this script, Deckard is running checks using Esper in his car. He does use a code but it doesn't look like his ID to me; more of a request code:
View attachment 775194
Sorry for the orientation, IPhone and RPF stuff...
Darn. Oh well!