Health Information Management

Start preparing for ICD-10-CM by comparing differences in diabetes mellitus coding

HIM-HIPAA Insider, August 16, 2011

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by Kathy DeVault, RHIA, CCS, CCS-P

In ICD-10-CM, the diabetes mellitus codes are combination codes that include the:
  • Type of diabetes
  • Body system affected
  • Complications affecting that body system
These combination codes make coding diabetes mellitus less confusing and decreases the number of codes necessary to describe diabetic complications. Diabetes may be coded with as many combination codes as necessary to fully describe all complications. They should be sequenced based on the reason for a particular encounter.
 
In ICD-10-CM, the 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, the classification directs the coder to code the type of diabetes with hyperglycemia.
 
The five categories of diabetes mellitus 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
Category O24 is used to identify diabetes mellitus in pregnancy, childbirth, or the puerperium.
 
ICD-10-CM diabetes mellitus code examples:
  • E09.01 – Drug or chemical induced diabetes mellitus with hyperosmolarity with coma
  • E10.11 – Type 1 diabetes mellitus with ketoacidosis with coma
  • E11.40 – Type 2 diabetes mellitus with diabetic nephropathy, unspecified
  • E13.621 – Other specified diabetes mellitus with foot ulcer
Editor’s note: For additional tips, see the full article in the July 12 issue of JustCoding.



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