Ophthalmology and Optometry Coding Alert

OCT stands for -optical coherence tomography,- and it's also sometimes called a retinal thickness analyzer (RTA). Ophthalmologists use OCT as an early test for eye disease, especially glaucoma. Code OCT with CPT 92135 (Scanning computerized ophthalmic diagnostic imaging [e.g., scanning laser] with interpretation and report, unilateral). Use this same code to report all scanning laser glaucoma tests (SLGT).

2007 National Medicare Physician Fee Schedule Allowable: $42.45 when performed in the office.

Global period: N/A

Sample covered diagnosis codes include (note that this is not a complete list):

- 362.85--Retinal nerve fiber bundle defects
- 364.22--Glaucomatocyclitic crises
- 365.00--Preglaucoma, unspecified
- 365.04--Ocular hypertension
- 365.10--Open-angle glaucoma, unspecified
- 365.11--Primary open-angle glaucoma
- 365.12--Low tension glaucoma
- 365.13--Pigmentary glaucoma
- 365.14--Glaucoma of childhood
- 365.15--Residual stage of open-angle glaucoma
- 365.20--Primary angle-closure glaucoma, unspecified
- 365.21--Intermittent angle-closure glaucoma
- 365.22--Acute angle-closure glaucoma
- 365.23--Chronic angle-closure glaucoma
- 365.24--Residual stage of angle-closure glaucoma
- 368.40--Visual field defect, unspecified
- 377.00--Papilledema, unspecified
- 377.15--Partial opticatrophy
- 377.9--Unspecified disorder of optic nerve and visual pathways

Codes bundled with 92135 by Correct Coding Initiative (CCI): 99211, 92250.