CPT® Code 69730

Replacement (including removal of existing device), osseointegrated implant, skull; with magnetic transcutaneous attachment to external speech processor, outside the mastoid and involving a bony defect greater than or equal to 100 sq mm surface area of bone deep to the outer cranial cortex

The CPT® Code 69730 refers to the surgical procedure for the replacement of an osseointegrated implant in the skull, which includes the removal of an existing device. This procedure specifically involves the use of a magnetic transcutaneous attachment to an external speech processor, which is positioned outside the mastoid area. The procedure is indicated for patients with a bony defect that has a surface area of 100 square millimeters or greater, extending deep to the outer cranial cortex. Bone conduction implants (BCI) are designed to enhance hearing by utilizing an external hearing aid or speech processor that amplifies sound. The BCI is anchored to the skull, allowing sound vibrations to be transmitted through the bone directly to the cochlea, which is essential for individuals with certain types of hearing loss. The magnetic transcutaneous attachment is particularly beneficial in cases where the mastoid region is compromised, such as in patients suffering from chronic infections that affect hearing. The replacement of the device may be necessary in instances of malfunction, ensuring continued functionality and effectiveness of the hearing aid system. The surgical approach is meticulously planned, typically behind the ear in the retrosigmoid area or the squamous part of the temporal bone, to facilitate optimal placement and integration of the new implant.