081X0J3
Bypass Lacrimal Duct, Right to Nasal Cavity with Synthetic Substitute, Open Approach
Procedural Specifications
| Clinical Axis | Detail Definition |
|---|---|
| Section | 0 Medical and Surgical |
| Body System | 8 Eye |
| Operation | 1 Bypass |
| Body Part | X Lacrimal Duct, Right |
| Approach | 0 Open |
| Device | J Synthetic Substitute |
| Qualifier | 3 Nasal Cavity |
Operation Definition
Altering the route of passage of the contents of a tubular body part
Procedure Overview
This family covers procedures that create a new pathway for fluid within the eye, most often to manage glaucoma when standard treatments have not controlled eye pressure. The eye continuously produces a clear fluid called aqueous humor, and in glaucoma this fluid drains too slowly, building up pressure that can damage the optic nerve and threaten vision. A bypass procedure reroutes that fluid around the eye's natural, poorly functioning drainage angle to a new outflow location, typically by implanting a small tube or valve device that channels aqueous humor to a reservoir beneath the eye's outer surface.
Surgeons turn to these procedures, sometimes called glaucoma drainage device or aqueous shunt implantation, when medications and laser treatment have failed to keep pressure at a safe level, or when a patient's anatomy makes more conventional filtering surgery unlikely to succeed. The goal is not to cure glaucoma but to protect remaining vision by keeping pressure within a target range over the long term.
Anatomy & Axis Detail
Lacrimal Duct, Right
The right lacrimal duct (nasolacrimal duct) drains tears from the lacrimal sac into the nasal cavity, and obstruction of this narrow passage causes chronic epiphora and recurrent dacryocystitis. A bypass here is performed when the natural drainage channel is scarred or blocked beyond what dilation or probing can fix, most often as a dacryocystorhinostomy that creates a new conduit, sometimes with a silicone or Pyrex tube, connecting the lacrimal sac directly to the nasal mucosa. Because the duct runs through the bony nasolacrimal canal alongside the maxilla and inferior turbinate, the approach may be external (via a skin incision near the medial canthus) or endonasal, and documentation should specify the route and any stent placement, since these affect the qualifier and device value selected for coding.
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: Synthetic Substitute
Synthetic Substitute designates a device made from manufactured, non-biologic material, such as mesh or prosthetic components, used to replace or augment a body part. It is distinguished from the two tissue substitute categories by its artificial composition, which carries different considerations for integration and long-term durability than biologic grafts.
Qualifier: Nasal Cavity
This qualifier designates the nasal cavity as a related anatomic site, most often used where a procedure elsewhere, such as on the ethmoid sinus or nasolacrimal duct, involves or communicates with the nasal passage. It differs from qualifiers naming specific sinuses by referring to the open airway space rather than an enclosed cavity.
Coding & Documentation
Code assignment hinges on the operative note specifying that a device was implanted to establish a new conduit for aqueous humor, along with the qualifier identifying where that fluid is being routed to, such as the subconjunctival space or an external collection reservoir. Documentation should also state which eye and, when relevant, which specific quadrant or structure served as the origin point of the bypass. A common assignment error is defaulting to a drainage or dilation code when the operative report actually describes a device creating a permanent alternate route rather than simply releasing trapped fluid or widening an existing passage. Coders should also confirm the device value matches what was actually implanted, since tube shunts and newer micro-stent devices are captured differently.