09RE07Z
Replacement Inner Ear, Left to No Qualifier with Autologous Tissue Substitute, Open Approach
Procedural Specifications
| Clinical Axis | Detail Definition |
|---|---|
| Section | 0 Medical and Surgical |
| Body System | 9 Ear, Nose, Sinus |
| Operation | R Replacement |
| Body Part | E Inner Ear, Left |
| Approach | 0 Open |
| Device | 7 Autologous Tissue Substitute |
| Qualifier | Z No Qualifier |
Operation Definition
Putting in or on biological or synthetic material that physically takes the place and/or function of all or a portion of a body part
Procedure Overview
Replacement procedures on the ear, nose, or sinuses take out a damaged or diseased structure and put a substitute in its place, either using the patient's own tissue, donor tissue, or a synthetic device. The most common example is ossicular chain replacement, where one or more of the tiny bones in the middle ear (malleus, incus, stapes) are swapped for a prosthesis after damage from chronic infection, otosclerosis, or trauma has broken the sound-conducting chain. A similar logic applies to reconstructing part of the external ear or nasal framework with a graft or implant after a defect from cancer surgery, congenital absence, or severe injury.
The goal is nearly always functional: restoring hearing through a rebuilt ossicular chain, or restoring the structural support of the nose so it can breathe and look normal again. These are typically planned procedures done under general anesthesia, often as one component of a larger reconstructive plan that may also involve tissue transfer from elsewhere in the body.
Anatomy & Axis Detail
Inner Ear, Left
On the left side, inner ear replacement typically describes cochlear implantation, in which an internal receiver and electrode array are placed within the cochlea to provide electrical stimulation to the auditory nerve after severe or profound sensorineural hearing loss has rendered the native hair cells nonfunctional. The inner ear's deep, protected location within the temporal bone, close to the facial nerve and internal auditory canal, requires a mastoidectomy with careful identification of the facial recess to safely access the cochlea for electrode insertion. Because this procedure substitutes an electronic device for the biological hearing structure rather than repairing or augmenting it, it is coded as replacement rather than supplement. Surgeons and documentation should note device manufacturer, electrode array type, and confirmation of full insertion, as these details affect subsequent audiologic programming.
Approach: Open
Open approach means the surgeon cuts through skin, mucous membrane, or other tissue layers to physically expose the target site to view before performing the procedure. It gives direct visualization and hands-on access, distinguishing it from Percutaneous approaches where instruments pass through a small puncture without exposing the site. Open is typical for procedures needing wide access, such as most laparotomies.
Device: Autologous Tissue Substitute
Autologous Tissue Substitute identifies a device value where material harvested from the patient's own body, such as an autograft, is used to replace or reconstruct a body part. Its defining feature is tissue origin from the patient, setting it apart from Nonautologous Tissue Substitute, sourced from a donor or animal, and Synthetic Substitute, made of manufactured material.
Coding & Documentation
Replacement is coded only when the original body part is physically removed and a device or graft takes its place. The operative note has to describe both the excision of the native structure and the insertion of the substitute material - documentation that only mentions 'reconstruction' without specifying removal of the prior part pushes coders toward Supplement instead. For ossicular work, the surgeon's dictation of which ossicle(s) were excised and what type of prosthesis (partial or total ossicular replacement prosthesis) was placed is essential to code correctly.
A frequent error is defaulting to Replacement whenever a prosthesis is mentioned, without confirming that native tissue was actually resected. Coders also mix up device character values when the prosthesis type (autologous, synthetic substitute, nonautologous tissue substitute) isn't clearly stated in the note, so a query back to the surgeon is often warranted.