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