ICD-10-CM code · FY2027

E16.A1 Hypoglycemia level 1

BillableValid for claims as a specific diagnosis code

About E16.A1

Code: E16.A1
Billable: Yes
Short description: Hypoglycemia level 1
Category: E16 Other disorders of pancreatic internal secretion
Block: E15-E16 Other disorders of glucose regulation and pancreatic internal secretion
Chapter: 4 Endocrine, nutritional and metabolic diseases
Code set: FY2027, October 1, 2026 to September 30, 2027

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Coding notes for E16.A1

Applicable to Other names for conditions reported with this code.

Decreased blood glucose level 1

Chapter 4 notes (apply to every code in it)

Note

All neoplasms, whether functionally active or not, are classified in Chapter 2. Appropriate codes in this chapter (i.e. E05.8, E07.0, E16-E31, E34.-) may be used as additional codes to indicate either functional activity by neoplasms and ectopic endocrine tissue or hyperfunction and hypofunction of endocrine glands associated with neoplasms and other conditions classified elsewhere.

Excludes1 Not coded here: never report these together with this code (use the code given instead).

transitory endocrine and metabolic disorders specific to newborn (P70-P74)

Related codes in E16.A

E16.A2 Hypoglycemia level 2Billable
E16.A3 Hypoglycemia level 3Billable

Latest research on hypoglycemia

Metformin is associated with lowering maternal hyperglycemia and reducing the risk of neonatal hypoglycemia among pregnant patients at risk of preterm deliveryJan 13, 2026 · Chronic Disease
Machine learning model non-invasively detects suspected cases of hypoglycemia during real-world drivingSep 13, 2024 · Chronic Disease
Neonatal hypoglycemia not significantly associated with lower educational achievement during childhoodMar 23, 2022 · Obstetrics
Treatment at lower glucose threshold noninferior to traditional threshold in newborns with asymptomatic hypoglycemiaMar 4, 2020 · Endocrinology
In topline phase 3 results, retatrutide lowered A1C more and reduced weight more than semaglutide 2 mg at 80 weeksOct 29, 2026 · 2MM Trial Briefs

Landmark trials from 2MM Classics

The NICE-SUGAR trial: Intensive glycemic control harmful in the ICU [Classics Series]Mar 1, 2023 · Critical, Emergent and Pulmonary Care Classics

More Endocrinology from 2 Minute Medicine

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ICD-10-CM FY2027 code set, as published by the CDC National Center for Health Statistics (NCHS) and CMS, effective October 1, 2026 to September 30, 2027. Codes, titles and notes are shown as published. Check payer rules and the official guidelines before billing. This page is not medical advice.