E16.A1 Hypoglycemia level 1

The ICD-10-CM code for Hypoglycemia level 1 is E16.A1 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Chapter

4: Endocrine, nutritional and metabolic diseases (E00-E89)

Section

E15-E16: Other disorders of glucose regulation and pancreatic internal secretion (E15-E16)

Category E16

12 codes (10 billable)

FY2026 Status

Introduced in FY2025

Also Known As

ICD-10-CM Alphabetic Index entries that lead to E16.A1:

• Hypoglycemia (spontaneous) › level › 1
• Decrease (d) › blood › glucose › level 1

Inclusion Terms

• Decreased blood glucose level 1

Official Coding Guidelines

Diabetes mellitus (TOC entry)

a. Diabetes mellitus ................................................................................................................... 39

Obesity (TOC entry)

b. Obesity .................................................................................................................................. 42

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

• CMS — ICD-10-CM Official Code Set and Guidelines, FY2026
• CDC/NCHS — ICD-10-CM Files and Browser Tool