E16.2 vs E89.1
E16.2 (Hypoglycemia, unspecified) compared with E89.1 (Postprocedural hypoinsulinemia), 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. E89.1 carries an Excludes1 note covering E16.2: “transient postprocedural hypoglycemia (E16.2)”
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
| E16.2Hypoglycemia, unspecified | E89.1Postprocedural hypoinsulinemia | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | E00-E89 — Endocrine, Nutritional and Metabolic Diseases (E00-E89) | E00-E89 — Endocrine, Nutritional and Metabolic Diseases (E00-E89) |
| Definition | Hypoglycemia, unspecified is a billable ICD-10-CM diagnosis code (E16.2). | Postprocedural hypoinsulinemia is a billable ICD-10-CM diagnosis code (E89.1). |
| Includes | — | Postpancreatectomy hyperglycemia Postsurgical hypoinsulinemia |
| Use additional code | code for hypoglycemia level, if applicable (E16.A-) | code, if applicable, to identify: acquired absence of pancreas (Z90.41-) insulin use (Z79.4) |
| Code first | — | , if applicable, diabetes mellitus (postpancreatectomy) (postprocedural) (E13.-) |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources