K21.9
K21.9: Gastro-esophageal reflux disease without esophagitis
Billable / specific codeICD-10-CM
K21.9 is a billable, specific ICD-10-CM code for gastro-esophageal reflux disease without esophagitis. It is valid for submission on a claim.
Check K21.9 with the rest of the claim: free scrubberInclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Esophageal reflux NOS
Risk adjustment
No CMS-HCC V28 category: this code does not change a RAF score.
Medicare coverage
K21.9 is named in 20 Medicare coverage policies: 16 listing it as supporting medical necessity, and 4 listing it as NOT covered. Which one applies depends on your Medicare contractor.
- A59015Billing and Coding: MolDX: Molecular Testing for Detection of Upper Gastrointestinal Metaplasia, Dysplasia, and Neoplasianot covered
- A59032Billing and Coding: MolDX: Molecular Testing for Detection of Upper Gastrointestinal Metaplasia, Dysplasia, and Neoplasianot covered
- A59051Billing and Coding: MolDX: Molecular Testing for Detection of Upper Gastrointestinal Metaplasia, Dysplasia, and Neoplasianot covered
- A59121Billing and Coding: MolDX: Molecular Testing for Detection of Upper Gastrointestinal Metaplasia, Dysplasia, and Neoplasianot covered
Alphabetic index entries that lead here
- Cardiochalasia
- Chalasia(cardiac sphincter)
- GERD(gastroesophageal reflux disease)
- Reflux
- Disease, diseased›gastroesophageal reflux(GERD)
- Reflux›acid
- Reflux›esophageal
- Reflux›gastroesophageal
- Relaxation›cardioesophageal
- Allergy, allergic›milk protein›gastroesophageal reflux
The condition this code belongs to
Code history
Unchanged in every release from FY2024 to FY2027.