ICD-10-CM
ICD-10 code for Ellison-Zollinger syndrome: E16.4
The ICD-10-CM index points "Ellison-Zollinger syndrome" to E16.4, Increased secretion of gastrin. E16.4 is a billable code.
Source: CDC ICD-10-CM FY2027 Alphabetic Index file dated June 16, 2026. Publisher page
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More specific codes in E16
A header groups codes and is not billed. A billable code is one you can report.
- E16Other disorders of pancreatic internal secretionHeader
- E16.0Drug-induced hypoglycemia without comaBillable
- E16.1Other hypoglycemiaBillable
- E16.2Hypoglycemia, unspecifiedBillable
- E16.3Increased secretion of glucagonBillable
- E16.4Increased secretion of gastrinBillable
- E16.8Other specified disorders of pancreatic internal secretionBillable
- E16.9Disorder of pancreatic internal secretion, unspecifiedBillable
- E16.AHypoglycemia levelHeader
- E16.A1Hypoglycemia level 1Billable
- E16.A2Hypoglycemia level 2Billable
- E16.A3Hypoglycemia level 3Billable
Related conditions
Related pages
- E16.4 code detailsNotes, nearby codes, CMS-HCC group
- Category E16Every code under it
- Chapter 4Endocrine, nutritional and metabolic diseases
- 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 Ellison-Zollinger syndrome?
The ICD-10-CM index points "Ellison-Zollinger syndrome" to E16.4, Increased secretion of gastrin. E16.4 is a billable code.
Is E16.4 billable?
Yes. E16.4 is a billable code in the FY2027 ICD-10-CM file. Use a more specific code when the record documents one.
What chapter is E16.4 in?
Chapter 4. Endocrine, nutritional and metabolic diseases.
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.