Looks like normal needle and twig drop.
Mike

Are there any apple trees nearby? I have a bristlecone pine which got cedar-apple blight from a nearby apple tree. It is a fungus that relies on 2 hosts (and apple and a conifer) to complete its life cycle. If you see any pinkish galls (they look a bit like developing cones) remove them. The disease is incurable and will cause bits of your tree to brown but generally will not be fatal.

Pine trees are not an alternate host of Cedar-Apple Rust. Likely some other malady got your pine.

tj

You can 'fix' it by cutting off the dead growth.

A few dead twigs here and there is not unusual, especially if your tree had previously been grown in the sun. It's in some shade now. Maybe it's going through an adjustment.

How long has it been where it is now?

Mike