Thyrotoxicosis [hyperthyroidism]
In Disorders of thyroid gland (E00-E07), chapter 4: Endocrine, Nutritional and Metabolic Diseases
14 billable codes under E05: 7 are an MCC; none map to an HCC.A CC or MCC (major CC) is a secondary diagnosis that raises the MS-DRG payment.
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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 E05
E05 can't be used on a claim. Pick a billable code below; grey headings group them.
- E05.0Thyrotoxicosis with diffuse goiter
- E05.00Thyrotoxicosis with diffuse goiter without thyrotoxic crisis or storm
- E05.01Thyrotoxicosis with diffuse goiter with thyrotoxic crisis or storm
- E05.1Thyrotoxicosis with toxic single thyroid nodule
- E05.10Thyrotoxicosis with toxic single thyroid nodule without thyrotoxic crisis or storm
- E05.11Thyrotoxicosis with toxic single thyroid nodule with thyrotoxic crisis or storm
- E05.2Thyrotoxicosis with toxic multinodular goiter
- E05.20Thyrotoxicosis with toxic multinodular goiter without thyrotoxic crisis or storm
- E05.21Thyrotoxicosis with toxic multinodular goiter with thyrotoxic crisis or storm
- E05.3Thyrotoxicosis from ectopic thyroid tissue
- E05.30Thyrotoxicosis from ectopic thyroid tissue without thyrotoxic crisis or storm
- E05.31Thyrotoxicosis from ectopic thyroid tissue with thyrotoxic crisis or storm
- E05.4Thyrotoxicosis factitia
- E05.40Thyrotoxicosis factitia without thyrotoxic crisis or storm
- E05.41Thyrotoxicosis factitia with thyrotoxic crisis or storm
- E05.8Other thyrotoxicosis
- E05.80Other thyrotoxicosis without thyrotoxic crisis or storm
- E05.81Other thyrotoxicosis with thyrotoxic crisis or storm
- E05.9Thyrotoxicosis, unspecified
- E05.90Thyrotoxicosis, unspecified without thyrotoxic crisis or storm
- E05.91Thyrotoxicosis, unspecified with thyrotoxic crisis or storm
E05 MS-DRGs
This code does not group to an MS-DRG as a principal diagnosis.
Other codes that refer to E05
Notes on these codes point to E05.
About the condition
Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.
Hyperthyroidism
Hyperthyroidism, or overactive thyroid, happens when your thyroid gland makes more thyroid hormones than your body needs. 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. If not treated, hyperthyroidism can cause serious problems with your heart, bones, muscles, menstrual cycle, and fertility. But there are treatments that can help.
Read more about hyperthyroidism on MedlinePlusCode history
Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.