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
534 Gastrojejunal ulcer →
section notes
534.5 Chronic or unspecified gastrojejunal ulcer; with perforation →
section notes
534.50   Chr marginal ulc w perf
534.51   Chr margin ulc perf-obst
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