- marijuana use - I think this is more of an administrative issue rather than a medical issue. The only time it is a medical issue is if you have a diagnosis is drug abuse or drug dependence in which case this is DQ.
- elbow dislocation - so long as this isn’t recurrent and you have full range of motion, full strength, and no neurological deficits, then you should be good to go.
- concussion - probably DQ. Any loss of consciousness? What work or school limitations did you have? Did they do any imaging studies on you? Any headaches or amnesia for a period of time after the event? For those with mild head injury, studies show you are at increased risk of seizures compared to the general population for 2-5 years after the event (depending on the study you read).
- Still’s murmur- they’re going to want an echo. Also, they’re going to want some documentation that details your fitness/athletic activities to include type, frequency, and duration over the past few years.
I don’t work for DODMERB nor do I work for any medical authorities so the above are just semi-educated opinions.