E16.2 — Hypoglycemia, unspecified
Is E16.2 billable?
Yes, but E16.2 is an unspecified code. E16.2 is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, E16.2 is an unspecified or catch-all code. Payers apply additional scrutiny to unspecified codes and many deny them when the medical record supports a more specific option, so check the documentation before selecting E16.2 — the more specific alternatives are listed below.
E16.2 at a glance
| Code | E16.2 |
|---|---|
| Description | Hypoglycemia, unspecified |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does E16.2 group to?
E16.2 sits in MDC 10 and helps define the logic of 2 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 640Miscellaneous Disorders of Nutrition, Metabolism, Fluids and Electrolytes with MCCmedical
- 641Miscellaneous Disorders of Nutrition, Metabolism, Fluids and Electrolytes without MCCmedical
How is E16.2 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to E16.2. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Glycopenia
- Hypoglycemia (spontaneous)
- McQuarrie's syndrome (idiopathic familial hypoglycemia)
- Decrease › glucose (d)
- Encephalopathy › hypoglycemic (acute)
- Syndrome › hypoglycemic
- Syndrome › McQuarrie's
- Decrease › blood › glucose (d)
- Findings, abnormal, inconclusive, without diagnosis › blood sugar › low
- Polyneuropathy › in › hypoglycemia (peripheral)
- Sugar › blood › low
Excludes1 — never code together
The conditions below can never be reported together with E16.2 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Use additional code
Report an additional code alongside E16.2 to fully describe the condition. E16.2 is sequenced first.
- code for hypoglycemia level, if applicable (E16.A-)
Excludes1 — never code together — inherited from Chapter 4
The conditions below can never be reported together with E16.2 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- transitory endocrine and metabolic disorders specific to newborn (P70-P74)
How long has E16.2 existed?
E16.2 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.
Which codes are confused with E16.2?
ICD-10-CM declares these codes mutually exclusive with E16.2 — exactly one of each pair can be correct for a given encounter.