Yes having surgery for Diastasis Recti or a tummy tuck can help fix Diastasis Recti.
The cost of the tummy tuck or the Diastasis Recti surgery is not cheap though and you'll have to pay for the surgery or tummy tuck out of pocket.
My doctor did say that the surgery that would be performed on me if I chose to have it would be the tummy tuck to get rid of the Diastasis Recti.
But I decided against it and just let it go away on it's own which it did within 6 months.
I saved a lot of money by not having the tummy tuck surgery and I hate having surgery done when I don't really need too.