If by narrative you mean the radio in to the hospital, I don't see why it would make that much of a difference. They're going to see when the Pt gets there anyway, and like someone said, you might have someone who passes. *shrug* Anything having to do with susceptible diseases (sickle cell, HIV, cancer, etc.) will probably be documented and reviewed in hospital if it's relevant, but that would be between pt and doctor (meaning non-pertinent history; I don't care about your dad's heart attack in '97 if we're bumbling along with a broken leg). But for all the paperwork and everything, fine, let the statisticians work out their numbers.
I guess part of my point would be someone who says they have a history of heart disease and has had a heart attack in the past. Am I going to broadcast to the ED that this patient is 300# because statistically this person would be susceptible to heart disease? No. Maybe the hospital will assume; maybe they won't. Or someone has is HIV+ or full-blown AIDS. Does it matter, between that person's house (or wherever) and the ED, if this person is black, white, or purple with yellow polka dots? Are there different pills for them to take? I've never seen a case where melanin directly affected patient care.
But like I said, if the state wants it to crunch their little numbers and make pretty pie charts, whatever, let them worry about it.