Type 1.5 Diabetes Mellitus

A 14-year-old female patient was seen in the Diabetes Clinic for a follow-up visit. The provider documented “Combination type 1 and type 2, diabetes mellitus in poor control.” The provider was queried and confirmed both type 1 and type 2 diabetes. This condition is also called diabetes type 1.5. What is the correct diagnosis code assignment for diabetes 1.5? ...

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Note:  The following article synopsis was NOT provided by the AHA. It was created by Find-A-Code/innoviHealth.

Article Overview

This premium coding article explains how a documented combination of type 1 and type 2 diabetes mellitus is handled in diagnosis coding. It is aimed at coders, billers, compliance staff, and clinical documentation specialists who need to understand the relevant diabetes category, documentation terminology, and how the article frames the reporting question.

Why This Topic Matters

Accurate diabetes diagnosis coding depends on matching documentation to the correct diabetes category. This article helps readers understand a commonly discussed terminology issue and the general coding context surrounding it.

What You Will Learn

  • How the article frames type 1.5 diabetes mellitus terminology
  • How the article discusses diabetes category selection based on provider documentation
  • What general type of guidance is covered for this diabetes coding question
  • How the article situates the topic within diabetes mellitus diagnosis coding

Who Should Read This

  • Medical coders
  • Medical billers
  • Compliance staff
  • Clinical documentation specialists
  • Revenue cycle professionals

Codes Discussed

Code Ranges Discussed

  • ICD-10-CM: E13

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