Specific code icon 2015 ICD-10-CM Diagnosis Code K21.9

Gastro-esophageal reflux disease without esophagitis

    2015 Billable Code

  • K21.9 is a billable ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • On October 1, 2015 ICD-10-CM will replace ICD-9-CM in the United States, therefore, K21.9 - and all other ICD-10-CM codes - should only be used for training or planning purposes until then.
  • This is the American ICD-10-CM version of K21.9. Other international ICD-10 versions may differ.

Clinical Information
  • A chronic disorder characterized by reflux of the gastric and/or duodenal contents into the distal esophagus. It is usually caused by incompetence of the lower esophageal sphincter. Symptoms include heartburn and acid indigestion. It may cause injury to the esophageal mucosa.
  • A disorder characterized by reflux of the gastric and/or duodenal contents into the distal esophagus. It is chronic in nature and usually caused by incompetence of the lower esophageal sphincter, and may result in injury to the esophageal mucosal. Symptoms include heartburn and acid indigestion.
  • Retrograde flow of gastric juice (gastric acid) and/or duodenal contents (bile acids; pancreatic juice) into the distal esophagus, commonly due to incompetence of the lower esophageal sphincter.
  • The backward flow of stomach acid contents into the esophagus (the tube that connects the mouth to the stomach).
  • Your esophagus is the tube that carries food from your mouth to your stomach. Gastroesophageal reflux disease (gerd) happens when a muscle at the end of your esophagus does not close properly. This allows stomach contents to leak back, or reflux, into the esophagus and irritate it. You may feel a burning in the chest or throat called heartburn. Sometimes, you can taste stomach fluid in the back of the mouth. This is acid indigestion. If you have these symptoms more than twice a week, you may have gerd. Anyone, including infants and children, can have gerd. If not treated, it can lead to more serious health problems. In some cases, you might need medicines or surgery. However, many people can improve their symptoms by
    • avoiding alcohol and spicy, fatty or acidic foods that trigger heartburn
    • eating smaller meals
    • not eating close to bedtime
    • losing weight if needed
    • wearing loose-fitting clothes
Applicable To
  • Esophageal reflux NOS
Description Synonyms
  • Gastroesophageal reflux disease
  • GERD (gastroesophageal reflux disease)
  • GERD (gastro-esophageal reflux disease) (heartburn)
  • Laryngitis due to gastroesophageal reflux
  • Reflux laryngitis
ICD-10-CM K21.9 is grouped within Diagnostic Related Group(s) (MS-DRG v30.0):
  • 391 Esophagitis, gastroent & misc digest disorders with mcc
  • 392 Esophagitis, gastroent & misc digest disorders without mcc

Convert ICD-10-CM K21.9 to ICD-9-CM

The following ICD-10-CM Index entries contain back-references to ICD-10-CM K21.9:
  • Cardiochalasia K21.9
  • Chalasia (cardiac sphincter) K21.9
  • Disease, diseased - see also Syndrome
  • gastroesophageal reflux (GERD) K21.9
  • GERD (gastroesophageal reflux disease) K21.9
  • Reflux K21.9
  • acid K21.9
    esophageal K21.9
    gastroesophageal K21.9
  • Relaxation
  • cardioesophageal K21.9