Hallux Valgus

“I have a patient who had a chevron bunionectomy performed 10 years ago. The bunion has returned, and the head is facing lateral. My plan is to perform a Lapidus procedure to reduce the first intermetatarsal angle and a rotational 1st metatarsal head osteotomy to align the articular surface (basically an Austin with a medial based wedge removed from the dorsal osteotomy to rotate the head slightly medial). How would you recommend I code this (ICD-10 and CPT codes)? Can I use CPT 29297 and CPT 29296? I’ve also considered CPT 28740 with CPT 29296.“

Can a hallux valgus correction CPT code be billed if the medial aspect of the head of the 1st metatarsal is not removed?

”We’re having a debate on coding for the diagnosis of primus varus versus the diagnosis of hallux valgus. When measuring angles, most patients have both a first intermetatarsal angle greater than 9 degrees (for primus varus) and a hallux abducto valgus angle greater than 15 degrees (for hallux valgus). Would we bill for both diagnosis codes? These are the diagnosis codes we use when billing our Lapidus bunionectomies.”