AHA Coding Clinic® for ICD-9 - 2011 Issue 4; Volume 3 New/Revised Codes

Insertion of Aqueous Drainage Shunt

Effective October 1, 2011, code 12.67, Insertion of aqueous drainage device, was created for the placement of glaucoma drainage devices, shunts or valves that are designed to improve the flow of aqueous humor from the anterior chamber or pars plana to a small silicone tube that collects and diverts the fluid for absorption into the lymph and blood vessels around the eye. When the trabecular meshwork drainage system does not allow the flow of aqueous humor from the eye, the fluid builds up and causes damage to the optic nerve. Intraocular pressure affects the function of the optic...

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