E05.00 Thyrotoxicosis with diffuse goiter without thyrotoxic crisis or storm

The ICD-10-CM code for Thyrotoxicosis with diffuse goiter without thyrotoxic crisis or storm is E05.00 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Chapter

4: Endocrine, nutritional and metabolic diseases (E00-E89)

Section

E00-E07: Disorders of thyroid gland (E00-E07)

Category E05

22 codes (14 billable)

FY2026 Status

Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to E05.00:

• Marsh's disease (exophthalmic goiter)
• Parson's disease (exophthalmic goiter)
• Parry's disease or syndrome
• Stokes' disease
• Syndrome › Basedow's
• Syndrome › Parry's
• Ophthalmoplegia › exophthalmic
• Syndrome › Flajani (-Basedow)

U.S. Hospital Utilization

• An estimated 47,125 U.S. inpatient stays in 2023 included E05.00 among the documented diagnoses.
• 2,815 stays listed it as the principal diagnosis.

Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.

Official Coding Guidelines

Diabetes mellitus (TOC entry)

a. Diabetes mellitus ................................................................................................................... 39

Obesity (TOC entry)

b. Obesity .................................................................................................................................. 42

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

• CMS — ICD-10-CM Official Code Set and Guidelines, FY2026
• CDC/NCHS — ICD-10-CM Files and Browser Tool
• AHRQ — HCUP National Inpatient Sample, Frequencies by Diagnosis Code (2016–2023)