ICDcodes.org
FY2027

E11.8 — Type 2 diabetes mellitus with unspecified complications

BillableUnspecified

Is E11.8 billable?

Yes, but E11.8 is an unspecified code. E11.8 is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, E11.8 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 E11.8 — the more specific alternatives are listed below.

E11.8 at a glance

CodeE11.8
DescriptionType 2 diabetes mellitus with unspecified complications
BillableYes
Code setICD-10-CM FY2027
Valid for encountersOctober 1, 2026 – September 30, 2027

Which MS-DRGs does E11.8 group to?

E11.8 sits in MDC Pre 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.

  • 008Simultaneous Pancreas, Islet Cell and Kidney Transplantsurgical

How is E11.8 listed in the Alphabetic Index?

These are the routes through the Alphabetic Index that lead to E11.8. They show the wording a clinician may have documented, which often differs from the Tabular description.

  • Diabetes, diabetic › with › complication (mellitus) (sugar)
  • Diabetes, diabetic › type 2 › with › complication (mellitus) (sugar)

Excludes1 — never code together — inherited from Chapter 4

The conditions below can never be reported together with E11.8 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 E11

The conditions below can never be reported together with E11.8 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

  • diabetes mellitus due to underlying condition (E08.-)
  • drug or chemical induced diabetes mellitus (E09.-)
  • gestational diabetes (O24.4-)
  • neonatal diabetes mellitus (P70.2)
  • postpancreatectomy diabetes mellitus (E13.-)
  • postprocedural diabetes mellitus (E13.-)
  • secondary diabetes mellitus NEC (E13.-)
  • type 1 diabetes mellitus (E10.-)

Use additional code — inherited from E11

Report an additional code alongside E11.8 to fully describe the condition. E11.8 is sequenced first.

  • code to identify control using:
  • injectable non-insulin antidiabetic drugs (Z79.85)
  • insulin (Z79.4)
  • oral antidiabetic drugs (Z79.84)
  • oral hypoglycemic drugs (Z79.84)

How long has E11.8 existed?

E11.8 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 E11.8?

ICD-10-CM declares these codes mutually exclusive with E11.8 — exactly one of each pair can be correct for a given encounter.

Which conditions are coded to E11.8?

What other codes are in the E11 family? (9)