E13.649 vs E16.1
E13.649 (Other specified diabetes mellitus with hypoglycemia without coma) compared with E16.1 (Other hypoglycemia), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.
Can these codes be reported together?
No — do not report together. E16.1 carries an Excludes1 note covering E13.649: “diabetes with hypoglycemia (E08.649, E10.649, E11.649, E13.649)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
Side by side
| E13.649Other specified diabetes mellitus with hypoglycemia without coma | E16.1Other hypoglycemia | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | E00-E89 — Endocrine, Nutritional and Metabolic Diseases (E00-E89) | E00-E89 — Endocrine, Nutritional and Metabolic Diseases (E00-E89) |
| Definition | Other specified diabetes mellitus with hypoglycemia without coma is a billable ICD-10-CM diagnosis code (E13.649). | Other hypoglycemia is a billable ICD-10-CM diagnosis code (E16.1). |
| Includes | diabetes mellitus due to genetic defects of beta-cell function diabetes mellitus due to genetic defects in insulin action postpancreatectomy diabetes mellitus postprocedural diabetes mellitus | Functional hyperinsulinism Functional nonhyperinsulinemic hypoglycemia Hyperinsulinism NOS Hyperplasia of pancreatic islet beta cells NOS |
| Use additional code | code for hypoglycemia level, if applicable (E16.A-) code to identify control using: injectable non-insulin antidiabetic drugs (Z79.85) | code for hypoglycemia level, if applicable (E16.A-) |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources