I am no expert on body work, but when a shop is repainting one body panel, they will need to blend the paint work into the adjacent body panel. Any competent estimate will itemize the cost of blending into the adjacent piece, and charge you (insurer) for doing this task. SOP

So if your two damaged panels are next to each other, there is some chance you can have it all worked into the repair at a reasonable or no cost; on the up and up.

If the damage is not on adjacent panels, you are looking at two separate incidents and two separate deductibles. Consider paying for the second repair out-of-pocket ... on the up and up. This all presumes you have decent no-fault comprehensive coverage and reasonable deductibles, along with a clean record.

BTW: just as often as not, filing an insurance claim for minor damage doesn't pay in the long run. You'll be paying your deductible in any event, and run the risk of losing your 'good driver' or 'no claims' discounts, etc., etc. Also understand that NO industry preferred body shop will EVER risk the relationship with the insurer 'just for you'. It's part of the age old don't-****-in-your-own-feed-bag thing.

Alas, life is never fair.