AHA Coding Clinic® for ICD-10-CM and ICD-10-PCS - 2021 Issue 3; Ask the Editor

Repair of Superior Semicircular Canal Dehiscence

A patient is admitted for repair of right superior semicircular canal dehiscence syndrome. At surgery, an incision was made in the supra-auricular area followed by craniotomy with bone plate removal. Dissection is continued until the arcuate eminence of the temporal bone was identified. There was no obvious dehiscence of the superior canal, but more so of the arcuate eminence. OtoMimix® bone cement was applied to the eminence to completely resurface this area surrounding the arcuate eminence and over the eminence itself. A titanium mesh plate was sized to cover the craniotomy defect. There was a small remnant of the bone plate, which was then affixed to the mesh, both were placed back into the wound and secured with screws reconstructing the pars squamosa of the right temporal bone. How is this semicircular canal dehiscence repair coded? ...

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