Research Article
Utilization of Outpatient Eye Care Services in Taiwan: A Nationwide Population Study
Table 1
Disease categorization according to ICD-9-CM codes.
| Disease categories | Disease code |
| Disorders of globe | 360 | Disorders of retina | 361, 362 | Disorders of uvea (choroid, iris, ciliary body) | 363, 364 | Glaucoma | 365 | Disorder of lens (cataract) | 366 | Disorders of refraction and accommodation and visual disturbances | 367, 368 | Blindness and low vision | 369 | Disorders of cornea | 370, 371, 918 | Disorders of conjunctiva | 372 | Disorders of eyelid and orbit | 373, 374, 376 | Disorders of lacrimal system | 375 | Disorders of optic nerve and visual pathway | 377 | Strabismus and other disorders of binocular eye movements | 378 | Others, unclassified including vitreous disorders | 379 | Trauma | 870, 921, 930, 940, 950 |
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