K21.9
Gastro-esophageal reflux disease without esophagitis
Gastro-esophageal reflux disease (GERD) is a chronic digestive disorder where stomach acid or bile flows back into the esophagus, irritating the lining. K21.9 specifically identifies cases where clinical symptoms of reflux are present, but diagnostic evaluations, such as endoscopy, do not reveal erosive changes or mucosal injury in the esophagus. This condition is frequently referred to as Non-Erosive Reflux Disease (NERD) and is characterized by the presence of troublesome symptoms caused by the reflux of gastric contents without esophageal mucosa injury.
Clinical Symptoms
- Heartburn (pyrosis)
- Acid regurgitation
- Non-cardiac chest pain
- Dysphagia
- Chronic cough
- Laryngitis
- Water brash
- Sensation of a lump in the throat (globus)
- Sleep disruption due to reflux
Common Causes
- Transient lower esophageal sphincter relaxations (TLESRs)
- Hypotensive lower esophageal sphincter
- Hiatal hernia
- Obesity
- Delayed gastric emptying
- Pregnancy
- Dietary triggers such as caffeine, alcohol, and fatty foods
- Medications like NSAIDs or calcium channel blockers
Documentation & Coding Tips
Distinguish between GERD with and without esophagitis to ensure the most specific ICD-10 code is assigned.
Example: Documentation should explicitly state 'without esophagitis' or 'non-erosive' to support K21.9.
Document any associated manifestations or complications such as laryngopharyngeal reflux or chronic cough.
Example: If a patient has GERD-induced cough, code both K21.9 and the specific cough code if applicable.
Ensure the record reflects whether the condition is being managed with long-term medication like PPIs.
Example: Note the use of omeprazole or other acid suppressants in the active medication list.