GERD
Also known as: Gastroesophageal reflux disease, Esophageal reflux, Esophagus, Esophageal, Esophagitis
Methodology & AI Transparency ⓘ
GERD Key Takeaways
Translated by Sarah Jenkins (AI RN Plain-English Translator) at a 7th-grade reading level
- 1 What it does: What is GERD? Sometimes, after eating a large meal or lying down too soon after eating, you might feel acid coming up into your throat.
- 2 Real-world patient consensus: Clinical coding for GERD uses ICD-10 K21.9 across GERD & Stomach specialty care.
- 3 Typical cash cost range: Workup highlights for GERD (K21.9): step-down acid suppression in GERD (K21.9: review).
- 4 Top reported side effects / signs: Key GERD & Stomach biomarkers for GERD (K21.9): Hemoglobin & Serum in GERD (K21.9: Ferritin) & Serum Vitamin B12 in GERD (K21.9: & Magnesium (chronic) (B12 > 450 pg/mL; Mg >= 2.0 mg/dL (K21.9)).
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What Is GERD?
What is GERD? Sometimes, after eating a large meal or lying down too soon after eating, you might feel acid coming up into your throat. This is called gastroesophageal reflux (GER). It happens when the muscle at the end of your esophagus (the tube that carries food from your mouth to your stomach) doesn't close properly. Stomach contents can then move back up and irritate the esophagus. Having reflux occasionally is common. But if you have symptoms two or more times a week or if they cause damage to the lining of your esophagus, you may have gastroesophageal reflux disease (GERD).
Pathophysiology, Underlying Causes & Clinical Presentation
Biological expression of GERD (K21.9, GERD & Stomach) reflects gastroduodenal mucosal bicarbonate in GERD (K21.9: barrier disruption). Cross-referenced with NIH MeSH (Gastroesophageal Reflux), longitudinal control is benchmarked via Hemoglobin & Serum in GERD (K21.9: Ferritin).
Common Symptoms & Clinical Signs
- • Are overweight or have obesity
- • Smoke or are around secondhand smoke
- • Presentation of GERD (K21.9): nausea, belching, or in GERD (K21.9: discomfort relieved or)
- • Secondary GERD clinical sign: post-meal retrosternal heartburn in GERD (K21.9: or sour acid)
Primary Federal Reference: NIH / National Library of Medicine MedlinePlus Entry ↗
GERD Diagnostic Classification & Lab Markers
| Metric | Verified Benchmark | Source |
|---|---|---|
| ICD-10-CM Diagnostic Code | K21.9 | WHO / CMS ICD-10-CM Clinical Classification |
| Clinical Specialty Hub | Acid Reflux, GERD & Upper GI Health | NIH MedlinePlus Health Topics |
| Diagnostic / Lab Marker: Hemoglobin & Serum in GERD (K21.9: Ferritin) | Ferritin > 50 ng/mL (no occult loss) (K21.9) | Clinical Reference Target Range |
| Diagnostic / Lab Marker: Serum Vitamin B12 in GERD (K21.9: & Magnesium (chronic) | B12 > 450 pg/mL; Mg >= 2.0 mg/dL (K21.9) | Clinical Reference Target Range |
| Diagnostic / Lab Marker: H. pylori Stool in GERD (K21.9: Antigen or Urea) | Negative (K21.9) | Clinical Reference Target Range |
FDA-Monographed Medications & Public Cash Price Reference for GERD
Treatment selection for GERD depends on clinical severity, diagnostic lab results, and medical history. Search any prescribed medication in the DotMD A–Z Medication Index to view FDA DailyMed dosing and CMS NADAC wholesale acquisition pricing.
Peer-Reviewed Human Clinical Trials & Meta-Analyses (GERD)
| Study & Plain-English Finding | Sample (N) | Rigor | Primary Source |
|---|---|---|---|
| Can This Approach Help? Inside the Latest Research on Vonoprazan Improves Nocturnal Gastroesophageal Reflux Symptoms in Nonerosive Among 772 subjects, the mean percentage of heartburn-free nights at week 4 was 43.3% for placebo vs 59.9% for vonoprazan 10 mg (least squares [LS] mean difference = 16.5%, P < 0.0001) and 56.4% for vonoprazan 20 mg (LS mean... The American journal of gastroenterology • 2026-08-01 • Phase III Randomized Trial | Multi-cohort | 88/100 | PMID 41081570 ↗ |
GERD Patient Community & “People Like Me” Threads
Filter GERD community threads and patient logs by age, biological sex, dosage, and treatment duration.