Risk factors leading to trabeculectomy surgery of glaucoma patient using Japanese nationwide administrative claims data: a retrospective non-interventional cohort study

Table 1 Medical and pharmacy codes used for the study

Therapeutic category	ICD-10 codes	Drug codes^a	Drug generic name
Hypertension	I10	213, 214, 217
Hypotension	I95%	216
Ischemic heart disease	I20%-I25%	212, 214, 217
Heart failure	I50%	211, 213, 214, 217
Stroke	I63%	333, 339
Diabetes	E10%-E14%	396
Hyperlipidemia	E78%	218
Electrolyte disorders	E87%	321, 322
Thyroid dysfunction	E02%, E03%	243
Systemic lupus erythematosus	M32%	2,456,001, 3,999,005, 3,999,038	Prednisolone, Azathioprine, Hydroxychloroquine
Depression	F251, F31%-F35%	1179
Dementia	F00%-F03%	1,190,012, 1,190,018, 1,190,019	Donepezil, Memantine, Galantamine,
Mental disorders	F09, F23, F28, F29	117
Cancer	C00%-C97%	421, 422, 423, 424, 429
Allergies	D690, D721, H011, H101, H169, H200, H650, H651, H654, H659, J301-J304, L23%, L500, T781, T784	441, 442, 443, 449
Peptic ulcer	F54, K221, K25%, K26%, K27%, K28%, K51%, K626, K633, K828, K838	232
Liver insufficiency/failure	K70%-K77%	625, 6399, 3919, 3999
Glaucoma (NTG/POAG/OAG)	H401	131^b
Unspecified glaucoma	H409	131^b

ICD-10 international classification of disease, NTG normal tension glaucoma, OAG open angle glaucoma, POAG primary open angle glaucoma
^aClassified by the Drug Therapeutic Class Code in Japan
^bFurthermore, commonly prescribed glaucoma eye drops were narrowed down by the Japanese National Health Insurance drug price listing pharmaceuticals code

ISSN: 1471-2415