Health Information Management

Tip: Note changes to diabetes coding in ICD-10-CM

APCs Insider, October 5, 2012

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ICD-10-CM provides coders with a much greater range of codes to choose from in the E08-E13 (diabetes mellitus) series. As a result, providers must document additional information, such as any underlying condition that caused the diabetes or whether drugs induced the diabetes.  

In ICD-10-CM, the categories of diabetes mellitus will help identify its type, says McCall. Those categories are:
  • 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
ICD-10-CM further divides secondary diabetes into several types, McCall says. For example, a patient may have diabetes due to a condition or a drug the patient is taking.
When it comes to type 1 and 2 diabetes, instead of falling under one category in ICD-9-CM (250), each type has its own category.
In ICD-10-CM, complications and manifestations will still be identified in the code series, McCall says-just as the fourth character does in ICD-9-CM.
Diabetes codes in ICD-10-CM can be up to six ­characters long. The first three characters represent the category, just as they do in ICD-9-CM. The fourth ­character identifies the presence of manifestations or complications. The fifth and sixth characters identify specific types of manifestation.
ICD-10-CM codes for diabetes are combination codes that include the etiology and the manifestations.
The tip is adapted from “Compare coding for diabetes in ICD-9-CM, ICD-10-CM” in the July Briefings on APCs.

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