Coding for complicated bunion correction

What would be the correct CPT coding for the following please:

A patient has a Lapidus-type procedure done, but the joint is fitted with a lateral plate after being packe with osteoinductive/osteoconductive bone graft with cancellous bone chips. The foot was irrigated, and there was still some deviation at the first matatarsophalangeal joint with sesamoid positions being slightly lateral to central.

The op report then states "an Austin bunionectomy was then performed with an OrthoSorb pin secured in place without incident with Chevron osteotomy being slightly longer."

Wound irrigated incisions reapproximated and dressed.

I'm a little stumped, I can't find any coding that actually matches what was done... Help!

Coding for complicated bunion correction