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

531 Gastric ulcer

section notes

531.9 Unspecified as acute or chronic gastric ulcer; without mention of hemorrhage or perforation

section notes
531.90   Stomach ulcer NOS
531.91   Stomach ulcer NOS-obstr
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