Gastroenterology & Hepatology

US GI/hepatology guidelines come from three societies (ACG, AGA, AASLD), plus AAP for peds. All publish open-access guidelines.

Society portals

• American College of Gastroenterology (ACG) Clinical Guidelines — open-access Am J Gastroenterol guidelines.
• American Gastroenterological Association (AGA) Clinical Practice Guidelines — Gastroenterology and Clinical Gastroenterology & Hepatology CPGs.
• AASLD Practice Guidance — hepatology, Hepatology and Clinical Liver Disease.
• NASPGHAN Position Papers (Peds GI) — pediatric gastroenterology, J Pediatr Gastroenterol Nutr.

Cornerstone guidelines

• ACG Acute Pancreatitis Guideline 2024 — Tenner et al, Am J Gastroenterol 2024.
• ACG GERD Guideline 2022 — Katz et al, Am J Gastroenterol.
• AGA IBS Guideline — pharmacological + non-pharmacological management.
• ACG IBD Guidelines (UC and Crohn’s) — adult inflammatory bowel disease.
• AASLD HCV Guidance — HCVGuidelines.org — AASLD/IDSA living document for hepatitis C treatment.
• AASLD HBV Guidance 2018 + 2022 update — chronic hepatitis B management.
• AASLD Cirrhosis Guidance (NAFLD, MASLD) — metabolic dysfunction-associated steatotic liver disease (formerly NAFLD).

Colorectal cancer screening

• USPSTF Colorectal Cancer Screening (2021) — start at 45, multiple screening modalities.
• ACS Colorectal Cancer Screening 2018 — Wolf et al; complementary ACS guidance.
• Multi-Society Task Force on CRC Screening 2017 — ACG/AGA/ASGE joint, Am J Gastroenterol.

Pediatric GI

• AAP CPG: Gastroesophageal Reflux Clinical Report — Lightdale et al, Pediatrics; peds GERD evaluation and treatment.
• NASPGHAN Constipation Evaluation & Treatment — J Pediatr Gastroenterol Nutr; functional constipation.
• Rome IV Criteria for Functional GI Disorders — consensus diagnostic criteria; pediatric and adult versions.

Calculators

• MELD-Na (MDCalc) — liver disease severity for transplant priority.
• Child-Pugh (MDCalc) — cirrhosis prognosis.
• Glasgow-Blatchford Bleeding Score (MDCalc) — UGI bleed risk stratification; identifies low-risk for outpatient management.
• Rockall Score for Upper GI Bleed (MDCalc) — mortality after UGI bleed.
• HBV DNA Viral Load Calculator (AASLD) — treatment threshold reference.
• APRI / FIB-4 for liver fibrosis (MDCalc) — non-invasive fibrosis staging.