Diagnostic Test
CPT Code 92020: Gonioscopy
Gonioscopy (separate procedure)
What is CPT 92020?
CPT 92020 reports gonioscopy, the examination of the anterior chamber angle using a special lens. Used primarily in the evaluation and management of glaucoma.
When to use CPT 92020
Use for patients with suspected or established glaucoma, narrow angles, or anterior segment pathology where angle examination is medically indicated.
Documentation requirements
- Medical indication documented
- Angle findings for all four quadrants
- Grading system used (Shaffer, Spaeth)
- Interpretation and plan
Reimbursement
$25 to $40
National averages only. Rates vary by locality, payer, and fee schedule. Verify with your contracted payers.
Common modifiers
- -50 bilateral (some payers)
- -25
Common denial reasons for CPT 92020
- Missing medical necessity
- Diagnosis code mismatch
- Already performed within frequency window
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Frequently Asked Questions About CPT 92020
Frequency depends on medical necessity. Most payers allow gonioscopy at glaucoma diagnosis, at regular intervals for glaucoma management, and any time anterior chamber pathology is suspected. Check payer-specific LCDs for limits.