MCMedicalCodingSoftware
E16.1

E16.1: Other hypoglycemia

Billable / specific codeICD-10-CM

E16.1 is a billable, specific ICD-10-CM code for other hypoglycemia. It is valid for submission on a claim.

Check E16.1 with the rest of the claim: free scrubber

Excludes1: never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

Use additional code

Add a secondary code to capture the detail described below.

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

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

  • Functional hyperinsulinism
  • Functional nonhyperinsulinemic hypoglycemia
  • Hyperinsulinism NOS
  • Hyperplasia of pancreatic islet beta cells NOS

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

E16.1 is named in 3 Medicare coverage policies: 3 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A56421Billing and Coding: CT of the Abdomen and Pelvis
  • A56686Billing and Coding: HbA1c
  • A57361Billing and Coding: Monitored Anesthesia Care

Alphabetic index entries that lead here

  • Hyperinsulinism(functional)
  • Encephalopathy›posthypoglycemic(coma)
  • Hyperinsulinism›ectopic
  • Hypoglycemia›functional, nonhyperinsulinemic
  • Hypoglycemia›infantile
  • Hypoglycemia›reactive(not drug-induced)
  • Encephalopathy›in›hyperinsulinism
  • Hyperinsulinism›with›encephalopathy
  • Hyperplasia, hyperplastic›pancreatic islet cells›beta

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under E16

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.