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Table 2 Codes searched for in the national register

From: Decreasing incidence of peptic ulcer complications after the introduction of the proton pump inhibitors, a study of the Swedish population from 1974–2002

Ulcer complication

ICD 8

(-1986)

ICD 9

(1987–96)

ICD 10

(1997-)

Perforated gastric ulcer

53100, 53101

5311, 5312

5315, 5316

K251, K252

K255, K256

Perforated duodenal ulcer

53200

5321, 5322

5325, 5326

K261, K262

K265, K266

Other perforated ulcer

53300, 53400

5331, 5332

5335, 5336

5341, 5342

5345, 5346

K271, K272

K275, K276

K281, K282

K285, K286

Bleeding gastric ulcer

53190, 53193

5310, 5312

5314, 5316

K250, K252

K254, K256

Bleeding duodenal ulcer

53290

5320, 5322

5324, 5326

K260, K262

K264, K266

Other bleeding ulcer

53390, 53490

5330, 5332

5334, 5336

5340, 5342

5344, 5346

K270, K272

K274, K276

K280, K282

K284, K286