Table 4. Causative organisms of infectious ocular inflammation by diagnosis and medication codes.

	Sample size, n
Specified by ICD-9 Diagnosis Code
Parasite
Histoplasma	5976
Toxoplasma	1104
Other	28
Viral
VZV	1129
HSV	442
Other	577
Unspecified
infectious endophthalmitis	1610
infectious iridocyclitis	733
Mycobacterial	36
Syphilis	36
Specified by NDC or J Medication Code
Viral	3854
Bacterial	2943
Toxoplasma	786
Fungal	542
Mycobacterial	49
Parasite (excluding toxoplasma)	33

ICD = International Classification of Diseases; VZV = varicella zoster virus; HSV = herpes simplex virus; NDC = National Drug Code