K20.0 – Eosinophilic esophagitis

ICD-10-CM 2027 diagnosis code · Diseases of esophagus, stomach and duodenum

Billable code

ICD-10-CM code K20.0
Code
K20.0 (claims format: K200)
Description
Eosinophilic esophagitis
Billable
Yes – valid for HIPAA-covered transactions
Valid for
Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter
11. Diseases of the digestive system (K00-K95)
Block
K20-K31 Diseases of esophagus, stomach and duodenum
Parent codes
K20

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

K20 – Esophagitis

Excludes1 (not coded here):
  • erosion of esophagus (K22.1-)
  • esophagitis with gastro-esophageal reflux disease (K21.0-)
  • reflux esophagitis (K21.0-)
  • ulcerative esophagitis (K22.1-)
Excludes2 (not included here):
  • eosinophilic gastritis or gastroenteritis (K52.81)
Use additional code:
  • code to identify:
  • alcohol abuse and dependence (F10.-)

Block K20-K31

Excludes2 (not included here):
  • hiatus hernia (K44.-)

Index terms for K20.0

Entries in the ICD-10-CM alphabetic index that lead to this code:

Related codes in K20

Frequently asked questions

What is ICD-10 code K20.0?

K20.0 is the ICD-10-CM code for eosinophilic esophagitis, in the block K20-K31 (Diseases of esophagus, stomach and duodenum).

Is K20.0 a billable code?

Yes. K20.0 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does K20.0 belong to?

It belongs to category K20 – Esophagitis.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.