Health Information Management

Tip: Note ICD-10-CM diabetes code changes

APCs Insider, April 20, 2012

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ICD-10-CM diabetes mellitus codes are combination codes that include the following information:

  • Type of diabetes
  • Body system affected
  • Complications affecting that body system


These combination codes make coding diabetes mellitus less confusing, and they decrease the number of codes necessary to describe diabetic complications. Coders may report as many combination codes as necessary to completely describe all complications. Coders should sequence the codes based on the reason for a particular encounter.

In ICD-10-CM, diabetes mellitus codes are no longer classified as controlled or uncontrolled. If provider documentation includes words such as "uncontrolled,” "out of control,” or "poorly controlled,” coders should report the type of diabetes with hyperglycemia.

In ICD-10-CM, diabetes mellitus falls under five categories:

  • E08—Diabetes mellitus due to underlying condition
  • E09—Drug- or chemical-induced diabetes mellitus
  • E10—Type 1 diabetes mellitus
  • E11—Type 2 diabetes mellitus
  • E13—Other specified diabetes mellitus


Category O24 identifies diabetes mellitus in pregnancy, childbirth, or the puerperium.

The tip is adapted from “This Month’s Coding Q&A” in the April Briefings on APCs.



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