CPT® Code 69405

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The procedure described by CPT® Code 69405 refers to Eustachian tube catheterization performed transtympanically. This medical intervention is aimed at addressing issues related to the Eustachian tube, which is a slender passage that connects the middle ear to the back of the nasal cavity. The primary function of the Eustachian tube is to regulate air pressure in the middle ear and facilitate the drainage of mucus produced by the ear's lining. When the Eustachian tube becomes obstructed, it can lead to the entrapment of air within the middle ear, resulting in negative pressure that can retract the tympanic membrane, commonly known as the eardrum. This condition, often referred to as Eustachian tube dysfunction, can lead to fluid accumulation in the middle ear, potentially causing hearing loss. In contrast to other procedures such as CPT® Code 69400, where the Eustachian tube is inflated without catheterization, or CPT® Code 69401, which involves the insertion of a catheter through the nasal passage to the Eustachian tube, CPT® Code 69405 specifically involves a more invasive approach. In this procedure, an incision is made in the tympanic membrane to allow for direct access to the middle ear. A microendoscope equipped with a catheter is then utilized to navigate to the Eustachian tube opening, where air is introduced to inflate the tube. This method is particularly beneficial for patients experiencing chronic Eustachian tube dysfunction, as it provides a direct means of alleviating pressure and restoring normal function to the Eustachian tube.