K20: Esophagitis
Codes under K20 (Esophagitis). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| K20.0 | Eosinophilic esophagitis | ✓ |
| K20.0 | Eosinophilic esophagitis | ✓ |
| K20.8 | Other esophagitis | — |
| K20.8 | Other esophagitis | — |
| K20.9 | Esophagitis, unspecified | — |
| K20.9 | Esophagitis, unspecified | — |
| K20.80 | Other esophagitis without bleeding | ✓ |
| K20.80 | Other esophagitis without bleeding | ✓ |
| K20.81 | Other esophagitis with bleeding | ✓ |
| K20.81 | Other esophagitis with bleeding | ✓ |
| K20.90 | Esophagitis, unspecified without bleeding | ✓ |
| K20.90 | Esophagitis, unspecified without bleeding | ✓ |
| K20.91 | Esophagitis, unspecified with bleeding | ✓ |
| K20.91 | Esophagitis, unspecified with bleeding | ✓ |
Frequently asked questions
What is ICD-10-CM code K20?
K20 is an ICD-10-CM category covering Esophagitis. It contains 14 more specific diagnosis codes, 10 of which are billable.
Is K20 a billable code?
No — K20 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example K20.0 — Eosinophilic esophagitis). 10 of the 14 codes under K20 are billable.
What codes fall under K20?
K20 includes K20.0, K20.0, K20.8, K20.8, K20.9, plus 9 more. See the full list with descriptions and billable status above.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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