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What is the code for Acute Gastric Ulcer with perforation? (Hint: Your first lookup has a "see" note which you will need to follow)
K25.1. Main term "Ulcer," subterm "gastric" tells you to "see Ulcer, stomach." Look up main term "Ulcer," subterm "stomach," second qualifier "acute," third qualifier "with perforation K25.1" Verify code in Tabular.