ICDcodes.org
FY2027

E13 — Other specified diabetes mellitus

Not billable

Is E13 billable?

No — E13 is a non-billable header code. E13 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 60 billable codes beneath E13.

Billable codes under this header

E13 at a glance

CodeE13
DescriptionOther specified diabetes mellitus
BillableNo — header code
Code setICD-10-CM FY2027
Valid for encountersOctober 1, 2026 – September 30, 2027

Excludes1 — never code together

The conditions below can never be reported together with E13 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 autoimmune process (E10.-)
  • diabetes (mellitus) due to immune mediated pancreatic islet beta-cell destruction (E10.-)
  • diabetes mellitus due to underlying condition (E08.-)
  • drug or chemical induced diabetes mellitus (E09.-)
  • gestational diabetes (O24.4-)
  • neonatal diabetes mellitus (P70.2)
  • type 1 diabetes mellitus (E10.-)

Use additional code

Report an additional code alongside E13 to fully describe the condition. E13 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)

Includes

Conditions classified to E13.

  • diabetes mellitus due to genetic defects of beta-cell function
  • diabetes mellitus due to genetic defects in insulin action
  • postpancreatectomy diabetes mellitus
  • postprocedural diabetes mellitus
  • secondary diabetes mellitus NEC

Excludes1 — never code together — inherited from Chapter 4

The conditions below can never be reported together with E13 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)

What codes fall under E13? (9)

How long has E13 existed?

E13 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 E13?

ICD-10-CM declares these codes mutually exclusive with E13 — exactly one of each pair can be correct for a given encounter.