E88.819 — Insulin resistance, unspecified
Is E88.819 billable?
Yes, but E88.819 is an unspecified code. E88.819 is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, E88.819 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 E88.819 — the more specific alternatives are listed below.
More specific alternatives
E88.819 at a glance
| Code | E88.819 |
|---|---|
| Description | Insulin resistance, unspecified |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does E88.819 group to?
E88.819 sits in MDC 10 and helps define the logic of 1 MS-DRG (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 642Inborn and Other Disorders of Metabolismmedical
How is E88.819 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to E88.819. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Resistance, resistant › insulin (to)
Excludes1 — never code together — inherited from Chapter 4
The conditions below can never be reported together with E88.819 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)
Excludes1 — never code together — inherited from E70-E88
The conditions below can never be reported together with E88.819 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Excludes1 — never code together — inherited from E88
The conditions below can never be reported together with E88.819 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- histiocytosis X (chronic) (C96.6)
Use additional code — inherited from E88
Report an additional code alongside E88.819 to fully describe the condition. E88.819 is sequenced first.
- codes for associated conditions
Use additional code — inherited from E88.81
Report an additional code alongside E88.819 to fully describe the condition. E88.819 is sequenced first.
- codes for associated manifestations, such as:
- obesity (E66.-)
Excludes2 — not included here — inherited from E70-E88
The conditions below are not part of E88.819, but a patient may have both at the same time. When documentation supports it, E88.819 and the excluded code may both be reported.
- Ehlers-Danlos syndromes (Q79.6-)
How long has E88.819 existed?
E88.819 first appears in FY2024.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.