Guided Notes

Digestive, Genitourinary, Endocrine & Skin

The remaining core systems — GI tract, kidneys and reproductive organs, hormones and the skin — with the conditions and procedures coders see daily.

The digestive system

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Path of food: mouth → esophagus → stomach → small intestine (duodenum, jejunum, ileum) → large intestine (cecum, colon, rectum) → anus. Helper organs: liver (makes bile), gallbladder (stores bile), pancreas (enzymes and insulin).

Common conditions: GERD (K21.-), gastritis, peptic ulcer, gallstones (cholelithiasis K80.-), appendicitis (K35.-), diverticulosis/diverticulitis (K57.-), hernias (K40–K46), colon polyps. Common procedures: upper endoscopy (EGD, 43235 family), colonoscopy (45378 family), cholecystectomy (47562 laparoscopic), hernia repair, appendectomy.

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