OCT is one of the most commonly billed ophthalmic tests โ but many practices confuse the two main types.
๐น OCT Retina (CPT 92134)
- Focus: Macula / retina
- Used for:
- Diabetic retinopathy
- Macular edema
- AMD
๐ This code is bilateral by definition (no modifier 50 needed)
๐น OCT Glaucoma (CPT 92133)
- Focus: Optic nerve / RNFL
- Used for:
- Glaucoma
- Glaucoma suspect
๐น Key Differences
| Feature | 92134 | 92133 |
| Area | Retina | Optic nerve |
| Condition | Macular disease | Glaucoma |
| Frequency | Often monthly (if active disease) | Periodic monitoring |
๐น Important Rule
๐ Many payers wonโt pay both codes on same day unless justified.
