Iodine-deficiency related thyroid disorders and allied conditions
In Disorders of thyroid gland (E00-E07), chapter 4: Endocrine, Nutritional and Metabolic Diseases
4 billable codes under E01: none are a CC or MCC; none map to an HCC.
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Instructional notes
Official coding guidelines
From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.
Covers diabetes mellitus coding, including type, insulin and drug use, pump malfunction and secondary diabetes, plus obesity and obesity class codes.
- Diabetes mellitus (page 39)
- Obesity (page 42)
All codes under E01
E01 can't be used on a claim. Pick a billable code below; grey headings group them.
E01 MS-DRGs
As the principal diagnosis, all 4 billable codes under E01 group to MS-DRG 643, 644, or 645 (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.
About the condition
Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.
Thyroid Diseases
Your thyroid is a small, butterfly-shaped gland in the front of your neck. It makes hormones that control the way the body uses energy. These hormones affect nearly every organ in your body and control many of your body's most important functions. For example, they affect your breathing, heart rate, weight, digestion, and moods.
Read more about thyroid diseases on MedlinePlusCode history
Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.