ICD-9-CM Vol. 1 Diagnostic Codes →
9. DISEASES OF THE DIGESTIVE SYSTEM (520-579) →
section notes
DISEASES OF ESOPHAGUS, STOMACH, AND DUODENUM (530-539) →
section notes
532 Duodenal ulcer →
section notes
532.2 Acute duodenal ulcer; with hemorrhage and perforation →
section notes
532.20   Ac duoden ulc w hem/perf
532.21   Ac duod ulc hem/perf-obs
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