This data is published to be used by HiDoctor'98
users
HiDoctor'98: The New Generation of Medical Software
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531 Gastric ulcer
[See fourth-digit subdivisions listed prior to 531]
Includes: erosion (acute) of stomach
ulcer (peptic):
pylorus
stomach
Excludes: peptic ulcer NOS (533.-)
Use additional E code, if desired, to identify drug, if drug-induced
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