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

533.7 Peptic ulcer, site unspecified; Chronic without mention of hemorrhage or perforation

section notes
533.70   Chronic peptic ulcer NOS
533.71   Chr peptic ulcer NOS-obs
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