Reimbursement for Gonioscopy

Gonioscopy is a diagnostic test wherein the examiner looks at the trabecular meshwork and adjacent structures located in the angle of the anterior chamber of the eye, where the iris and the cornea meet.  This is done using a goniolens, a contact lens with a reflecting mirror or prism.  Most frequently performed at the slit lamp, the eye is numbed, the lens is placed on the cornea, and the goniolens mirrors facilitate a 360 degree view of the anterior chamber angle.

Indications for gonioscopy include, but are not limited to:  rubeosis, glaucoma, hypotony, occlusive disorders, diabetic retinopathy, aphakia, intraocular foreign body, and subluxated or dislocated lens.  Note that this list is neither exhaustive nor universally recognized.

This FAQ addresses the following:

1. What is gonioscopy?
2. Are there any additional guidelines for this test?
3. Who may perform this test?
4. How should gonioscopy be documented in the medical record?
5. What CPT code describes the test?
6. What is the reimbursement for 92020?
7. How frequently may this test be performed?
8. What is the significance of the “separate procedure” designation in CPT?
9. Are other tests or services bundled with this test?

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