ADA compliant toilets are about 16.5" and Non-ADA compliant is about 14.5"
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This is the Aquia toilet bowl. The complete toilet is a Dual Flush and can be found here.
I'm sorry but Toto does not make round 10" rough in toilet which would fit what you need.
here is a link to all the Toto elongated toilets with a 10" rough in. They will all work with all of the Toto Washlets.