Gastric ulcer unspecified as acute or chronic without mention of hemorrhage or perforation
ICD-9-CM Volume 2 Index entries containing back-references to
531.9:
- Ulcer, ulcerated, ulcerating, ulceration, ulcerative 707.9

stomach (eroded) (peptic) (round) 531.9
with
acute 531.3

bleeding (recurrent) - see Ulcer, stomach, with hemorrhage
chronic 531.7

penetrating - see Ulcer, stomach, with perforation
perforating - see Ulcer, stomach, with perforation