CPT® Code 69719

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

The procedure described by CPT® Code 69719 involves the replacement of an osseointegrated implant in the skull, which includes the removal of an existing device. This type of implant is specifically designed for individuals with hearing loss, utilizing a bone conduction implant (BCI) system. The BCI operates by using an external hearing aid or speech processor to amplify sound, which is then transmitted through the implant anchored to the skull. This process allows sound vibrations to be conducted via the bone directly to the cochlea, facilitating improved hearing capabilities. The procedure is indicated for patients with healthy mastoid conditions, where hearing loss is not attributed to chronic infections. The replacement procedure is particularly relevant when the existing device malfunctions or requires updating. The surgical site is strategically planned to be approximately 5.5 cm behind the ear canal, aligning with the top of the auricle. This careful positioning is crucial for optimal function and aesthetic considerations. The procedure involves meticulous steps, including the creation of a subpericranial pocket for the new implant and ensuring that the surgical site is free from complications associated with the previous implant. The use of magnetic transcutaneous attachments allows for a seamless connection between the external speech processor and the internal implant, enhancing the patient's ability to engage with their environment through improved auditory input. Over time, the implant integrates with the living tissue, ensuring stability and functionality for the patient.