E16.2 Hypoglycemia, unspecified

Billable ICD-10-CM code, FY2026.

Excludes1 (never code together)

• diabetes with hypoglycemia (E08.649, E10.649, E11.649, E13.649)

Use additional code

• code for hypoglycemia level, if applicable (E16.A-)

MS-DRG index

Defines the logic of DRG(s) 640-641 in MDC 10.

Approximate ICD-9-CM (GEMs)

• 251.2 Hypoglycemia, unspecified

Code annotations containing back-references to E16.2

Back-references to E16.2

• Type 1 Excludes: E74 Other disorders of carbohydrate metabolism ("hypoglycemia NOS (E16.2)")
• Type 1 Excludes: E89.1 Postprocedural hypoinsulinemia ("transient postprocedural hypoglycemia (E16.2)")
• Type 1 Excludes: R73.0 Abnormal glucose ("hypoglycemia (E16.2)")
• Type 1 Excludes: R79 Other abnormal findings of blood chemistry ("hypoglycemia NOS (E16.2)")

Back-references to E16

• Code First: G63 Polyneuropathy in diseases classified elsewhere ("endocrine disease, except diabetes (E00-E07, E15-E16, E20-E34)")

Diagnosis Index entries for E16.2

• Decrease (d) › blood › glucose
• Decrease (d) › glucose
• Encephalopathy (acute) › hypoglycemic
• Findings, abnormal, inconclusive, without diagnosis › blood sugar › low (transient)
• Glycopenia
• Hypoglycemia (spontaneous)
• McQuarrie's syndrome (idiopathic familial hypoglycemia)
• Polyneuropathy (peripheral) › in (due to) › hypoglycemia
• Sugar › blood › low (transient)
• Syndrome › hypoglycemic (familial) (neonatal)
• Syndrome › McQuarrie's

Nearby codes

• E16 Other disorders of pancreatic internal secretion
• E16.0 Drug-induced hypoglycemia without coma
• E16.1 Other hypoglycemia
• E16.2 Hypoglycemia, unspecified (this code)
• E16.3 Increased secretion of glucagon
• E16.4 Increased secretion of gastrin
• E16.8 Other specified disorders of pancreatic internal secretion
• E16.9 Disorder of pancreatic internal secretion, unspecified
• E16.A Hypoglycemia level