ICD-10-CM
ICD-10 code for Esophagitis: K20.90
The ICD-10-CM index points "Esophagitis" to K20.90, Esophagitis, unspecified without bleeding. K20.90 is a billable code.
Source: CDC ICD-10-CM FY2027 Alphabetic Index file dated June 16, 2026. Publisher page
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Index subterms
A header groups codes and is not billed. A billable code is one you can report.
- K20.91with bleeding, Esophagitis, unspecified with bleedingBillable
- B37.81candidal, Candidal esophagitisBillable
- K21.00due to gastrointestinal reflux disease (without bleeding), Gastro-esophageal reflux disease with esophagitis, without bleedingBillable
- K20.0eosinophilic, Eosinophilic esophagitisBillable
- K21.00reflux, Gastro-esophageal reflux disease with esophagitis, without bleedingBillable
- K20.80specified NEC (without bleeding), Other esophagitis without bleedingBillable
- A18.83tuberculous, Tuberculosis of digestive tract organs, not elsewhere classifiedBillable
- K22.10ulcerative, Ulcer of esophagus without bleedingBillable
More specific codes in K20
A header groups codes and is not billed. A billable code is one you can report.
- K20EsophagitisHeader
- K20.0Eosinophilic esophagitisBillable
- K20.8Other esophagitisHeader
- K20.80Other esophagitis without bleedingBillable
- K20.81Other esophagitis with bleedingBillable
- K20.9Esophagitis, unspecifiedHeader
- K20.90Esophagitis, unspecified without bleedingBillable
- K20.91Esophagitis, unspecified with bleedingBillable
Use additional code
The CDC tabular list says to add the code named here after this one when it applies.
From K20. A note on a category applies to every code under it.
Use additional code to identify:
Excludes1
Excludes1 means these codes are not reported together.
From K20. A note on a category applies to every code under it.
Excludes2
Excludes2 means the other condition can be reported with this one when both are documented.
From K20. A note on a category applies to every code under it.
Related conditions
Related pages
- K20.90 code detailsNotes, nearby codes, CMS-HCC group
- Category K20Every code under it
- Chapter 11Diseases of the digestive system
- ICD-10 codes by conditionA to Z
- Check a list of ICD-10 codes
- Denial code CO-11Diagnosis does not support the procedure
- Denial code CO-146Diagnosis invalid for the date of service
- HCPCS Level II code lookup
Questions
What is the ICD-10 code for Esophagitis?
The ICD-10-CM index points "Esophagitis" to K20.90, Esophagitis, unspecified without bleeding. K20.90 is a billable code.
Is K20.90 billable?
Yes. K20.90 is a billable code in the FY2027 ICD-10-CM file. Use a more specific code when the record documents one.
What documentation notes apply to K20.90?
The CDC tabular list gives 4 Excludes1 notes (not coded together), 1 Excludes2 note (may be coded together when both are documented), 2 "use additional code" notes for K20.90 and the categories above it. They are listed on this page.
What chapter is K20.90 in?
Chapter 11. Diseases of the digestive system.
When do ICD-10-CM codes change?
Every October 1, with the new fiscal year file. Some years add April 1 updates. This page uses the FY2027 file, effective October 1, 2026.