E16.2 vs R79
E16.2 (Hypoglycemia, unspecified) compared with R79 (Other abnormal findings of blood chemistry), 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. R79 carries an Excludes1 note covering E16.2: “hypoglycemia NOS (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 | R79Other abnormal findings of blood chemistry | |
|---|---|---|
| Billing status | Billable | Non-billable header |
| Classification | E00-E89 — Endocrine, Nutritional and Metabolic Diseases (E00-E89) | R00-R99 — Symptoms, Signs and Abnormal Clinical and Laboratory Findings, Not Elsewhere Classified (R00-R99) |
| Definition | Hypoglycemia, unspecified is a billable ICD-10-CM diagnosis code (E16.2). | Other abnormal findings of blood chemistry is a non-billable ICD-10-CM category code (R79). |
| Use additional code | code for hypoglycemia level, if applicable (E16.A-) | code to identify any retained foreign body, if applicable (Z18.-) |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources