E11.42 Type 2 diabetes mellitus with diabetic polyneuropathy

ICD-10-CM · CMS code reference

E11.42 is type 2 diabetes with damage to many nerves (polyneuropathy), including diabetic neuralgia. If the record specifies autonomic neuropathy, use E11.43; for a single nerve, E11.41.

What to know

Diabetic neuralgia with type 2 diabetes is listed under E11.42.

Coding notes

From the ICD-10-CM FY2027 (effective October 1, 2026) tabular list. Notes on a parent code or category apply here too.

Also covers

Type 2 diabetes mellitus with diabetic neuralgia

Includes

diabetes (mellitus) due to insulin secretory defect
diabetes NOS
insulin resistant diabetes (mellitus)

Excludes1

Not coded together with this code. The exception is when the two conditions are unrelated to each other.

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

Add a second code for the following, when documented.

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)

Related codes

Common questions

What's the difference between E11.42 and E11.40?

E11.42 is for documented diabetic polyneuropathy or diabetic neuralgia. E11.40 is for diabetic neuropathy when the record doesn't say which type.

Is E11.42 a billable code?

Yes. E11.42 is a billable ICD-10-CM code in the ICD-10-CM FY2027 (effective October 1, 2026) code set.