› Cannot miss
› Ascending cholangitis (K83.09)
› Fever with jaundice
› Hypotension or confusion
› Acute cholecystitis with complications (K81.0)
› Persistent RUQ pain over 6 hours
› Peritonitis signs
› Acute pancreatitis (K85.9)
› Epigastric or RUQ pain radiating to back
› Lipase elevation
› Acute coronary syndrome (I24.9)
› Epigastric or RUQ discomfort in high risk patient
› ECG changes or troponin rise
› Pulmonary embolism (I26.99)
› Pleuritic RUQ pain with dyspnea
› Tachycardia and hypoxemia
› Pneumonia with pleurisy (J18.9)
› RUQ pain with cough or fever
› Focal lung findings
› Aortic dissection (I71.00)
› Sudden severe chest or back pain
› Pulse deficit or neuro deficit
› Abdominal aortic aneurysm rupture (I71.3)
› Hypotension with abdominal or back pain
› Syncope
› Mesenteric ischemia (K55.9)
› Pain out of proportion
› Lactate elevation
› HELLP syndrome (O14.2)
› Pregnancy with RUQ pain
› Hypertension and lab abnormalities
› Frequent causes
› Biliary colic (K80.20)
› Postprandial episodic RUQ pain
› Pain resolves within hours
› Acute cholecystitis (K81.0)
› RUQ pain with fever
› Positive Murphy sign
› Acute hepatitis (K75.9)
› Malaise with jaundice
› Marked transaminase rise
› GERD or gastritis (K21.9)
› Burning epigastric pain
› Meal related symptoms
› Renal colic (N20.0)
› Flank to groin radiation
› Hematuria
› Pyelonephritis (N10)
› Fever with CVA tenderness
› Pyuria
› Herpes zoster (B02.9)
› Dermatomal pain
› Vesicular rash
› Important alternatives
› Liver abscess (K75.0)
› Fever with RUQ pain
› Risk with biliary disease or bacteremia
› Budd-Chiari syndrome (I82.0)
› RUQ pain with hepatomegaly
› Ascites
› Fitz-Hugh-Curtis syndrome (A54.86)
› RUQ pain with PID symptoms
› Cervical motion tenderness
› Hepatic malignancy
› Weight loss
› Persistent RUQ discomfort
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