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
533 Peptic ulcer, site unspecified →
section notes
533.4 Peptic ulcer, site unspecified; Chronic or unspecified with hemorrhage →
section notes
533.40   Chr peptic ulcer w hem
533.41   Chr peptic ulc w hem-obs
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