Ophthalmology relies heavily on diagnostic testing. Proper billing requires understanding what each test does and when it’s medically necessary.
🔹 1. OCT (Optical Coherence Tomography)
Types:
- 92133 – Optic nerve (glaucoma)
- 92134 – Retina (macula diseases)
Why it’s done:
- Glaucoma monitoring
- Macular degeneration
- Diabetic retinopathy
👉 Must include interpretation & report or it won’t be paid
🔹 2. Visual Field Test
- 92081–92083
Purpose:
- Detect peripheral vision loss
- Monitor glaucoma
🔹 3. Fundus Photography
- 92250
Purpose:
- Document retinal conditions
- Track disease progression
🔹 4. Pachymetry
- 76514
Purpose:
- Measure corneal thickness
- Important for glaucoma evaluation
🔹 5. Gonioscopy
- 92020
Purpose:
- Examine drainage angle (glaucoma)
🔹 Billing Essentials
- Must have medical necessity + diagnosis
- Physician order required
- Separate interpretation report mandatory
