Hill Classification (GE Flap Valve)
Hill classification (Hill 1996) of the gastroesophageal flap valve (grades I-IV), graded endoscopically from a retroflexed view of the cardia.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Hill grade
- Grade III - diminished ridge, fails to close
Result: Hill grade III: a diminished ridge that fails to close around the endoscope; often with a hiatal hernia.
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What the result means
- Grade I
- A prominent ridge closely approximated to the scope, extending 3-4 cm along the lesser curvature; normal.
- Grade II
- A less pronounced ridge that may open with respiration but closes.
- Grade III
- A diminished ridge that fails to close around the endoscope; often with a hiatal hernia.
- Grade IV
- No ridge; the junction stays open, with the esophageal lumen seen in retroflexion; hiatal hernia.
What you enter
- Hill grade
How this is calculated
Hill LD, Kozarek RA, Kraemer SJ, et al. The gastroesophageal flap valve: in vitro and in vivo observations. Gastrointest Endosc. 1996;44(5):541-547. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.