I'm not sure if we have a firm policy, but I assign falling damage as a D10 per ten feet. A successful STR roll will cancel out one D10, and a successful DEX roll will cancel out a second D10, but after that, there's nothing to be done. Work out the distance, and roll the damage. If it's onto sharp or very broken ground, the damage is maxed. It is taken from current total HP to ascertain survival; it is applied against each body location to ascertain broken bones. It ignores armour, but is also applied to armour seperately. FYI, I handle explosives damage in exactly the same way.

Example:

Ebby the Ebon falls 60 feet off a walkway onto a street two levels down, not having any Flux for Porting. He makes his DEX (10) roll easily, but fails his STR (8), so the fall is worth 5D10 damage. That 5D10 are 6, 2, 7, 9 and 4, for a total of 28 HP. The damage is transmitted straight through Ebby's deathsuit. Ebby is on combat drugs, so he only actually takes 14 hits of damage. He has 17 hits normally, so is on 3 Hits and actually survives the fall. His torso can withstand 17 hits of damage but has been asked to cope with the effects of 28 points of falling, so he has cracked ribs and a fractured spine. His arms and legs can withstand 8 and 9 hits respectively, and all four are broken; I'll arbitrarily decide that the break in his left leg is a compound fracture, his right hand is shattered like an egg-shell, and his right arm is broken in 8 different places. His head, coping with 5 damage, is badly hurt; he'll lose 3 points of charisma and all of his Good Looks for the next six months, and he'll be comatose until he receives proper medical attention regardless of the amount of Kickstart pumped into him. His Deathsuit, which had seen some damage earlier, takes 28 ID and is destroyed/killed. Given the gravity of his wounds, he'll need medical attention soon. Ouch. Still, falling 60 feet, he's lucky to be alive, even through UV. If he'd been falling onto rubble, he'd have received 50 Dam and would be dead, even through drugs.

As I said, I treat explosive damage in the same way. A R10 Blast Grenade does 10pts of damage, then checks that 10pts against each body location for breaks/unconsciousness and for Armour shredding. Lob two or three into the room and most people will be pretty fucked up.