If your idea of fun while traveling abroad involves taking part in sports like scuba diving or jumping from someplace high while attached to a bungee cord , you could be in for an unpleasant surprise if you get injured.

Chances are your domestic health plan won't pick up the tab for medical care overseas , and it almost certainly won't cover you if you're seriously hurt and need to be evacuated by air to a medical facility.

And even if you've thought ahead and bought a travel insurance plan insurance plan that provides medical coverage and evacuation services for vacationers, it generally won't pay for injuries related to so-called hazardous sports unless you buy a coverage rider to the plan or upgrade to a special plan.

"As you get into more extreme sports, some plans exclude coverage," says Carol Mueller, a vice president at travel insurer Travel Guard . "You can get an adventure travel upgrade for things like rock climbing, scuba or mountain climbing."

One of Travel Guard's plans covers cancellation of the pre-paid and nonrefundable costs of a trip, medical and emergency evacuation coverage and access to a 24/7 hotline for emergency travel and concierge services.

Prices vary by the age of the traveler and trip cost. Someone aged 35 to 59 on a trip that costs between $3,001 and $3,500 would pay $188, for example, for that kind of coverage.

Copyright 2016 Kaiser Health News. To see more, visit Kaiser Health News .