iStent is a minimally invasive glaucoma surgery (MIGS) procedure.
๐น What is iStent?
A tiny implant that:
- Improves fluid drainage
- Reduces intraocular pressure
๐น CPT Codes
- 0191T โ iStent insertion (initial)
- 0376T โ Each additional stent
๐ These are Category III codes (temporary/tracking codes)
๐น When Performed
Often combined with:
- Cataract surgery (66984)
๐น Billing Considerations
- Some payers consider it investigational
- Documentation must support:
- Glaucoma diagnosis
- Medical necessity
๐น Common Denials
- Non-covered procedure
Missing documentation
