K21.0
Non-billableGastro-esophageal reflux disease with esophagitis
K21.0 is the ICD-10-CM code for Gastro-esophageal reflux disease with esophagitis. It is a non-billable category code — use a more specific child code such as K21.00 for billing.
K00-K95 Diseases of the digestive system
What this means — in plain language
MedlinePlus · NIHWhat are esophagus disorders? Esophagus disorders are problems with how your esophagus works. The esophagus is the tube that carries food from your mouth to your stomach. You usually don't notice it unless you swallow something too big, hot, or cold. You might also notice it if something is wrong. When that happens, you might feel pain or have trouble swallowing (dysphagia). What causes esophagus disorders? The…
Read more about Esophagus Disorders at MedlinePlus ↗Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.
Medications indicated for this condition
FDA labeling- Pantoprazole›
- Esomeprazole›
- Sodium BicarbonateProton Pump Inhibitor [EPC]›
- FamotidineHistamine-2 Receptor Antagonist [EPC]›
- Rabeprazole›
- LansoprazoleProton Pump Inhibitor [EPC]›
- OmeprazoleProton Pump Inhibitor [EPC]›
- DexlansoprazoleProton Pump Inhibitor [EPC]›
- Ranitidine›
- CimetidineHistamine-2 Receptor Antagonist [EPC]›
- Esomeprazole Magnesium Delayed Release Capsules›
- Omeprazole/sodiium BicarbonateProton Pump Inhibitor [EPC]›
Drugs whose FDA labeling lists this condition's category among its indications. Informational only — not a treatment recommendation or medical advice.
Conditions mapped to this code
MedlinePlus · NIHPlain-language health-topic references grounded in MedlinePlus (NIH/NLM).
Frequently asked questions
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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