Since a splint must be applied by a medical professional and is beyond the scope of simply first aid, if the broken arm is a result of work-related activity, then the arm splint would be OSHA recordable - unless it was only applied as a precaution by a first aider and was later found by a medical professional not to be needed.
Finger splints (hard, soft, etc...) are on the list of OSHA's First Aid and so it is not recordable.
Finger guards are on the list of First Aid provided by OSHA and therefore NOT recordable whether they are soft, rigid, whatever.
29105
29105
29105
You would call that a splint.
A splint is used to immobilise a break (in an arm or leg for example). The splint should be long enough to stop the break moving once it's in place. Simply place the splint alongside the affected limb, and secure it in place with a bandage over the whole length.
As long as the skin isn't broken, you won't harm the arm by getting it wet. (If the skin is broken, there might be concern about infection.) The reason doctors usually caution you against showering when you have a broken bone is because the cast (or splint) itself should not get wet -- fiberglass/plaster will lose integrity and fall apart, and a splint will breed bacteria without being dried properly (so removing your splint to shower is probably a better idea than showering with a splint on). That said, if the bones shift or move while you're showering, you're going to have a lot of pain. So you're still going to want to keep your arm immobile, even if removing the splint means you don't have to keep it dry.
CPT Code 29105 - Application of long arm splint (shoulder to hand)
A splint provides support to the broken arm. It also gets rest so that the recuperation is done in a proper manner.
A tourniquet. Arterial bleeding can't be stopped with a field dressing.
This is a simple fracture. Splint it and get the victim to the medics.
A sling is used to keep the injured arm against the chest.
Event long ago...