E05 Thyrotoxicosis [hyperthyroidism]

⚠ Non-Billable ICD-10-CM 2026
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The ICD-10-CM code for Thyrotoxicosis [hyperthyroidism] is E05 (FY2026). It is a non-billable category code — select a more specific code below for claims.

Classification

Section
E00-E07: Disorders of thyroid gland (E00-E07)
Category E05
22 codes (14 billable)
FY2026 Status
Stable since FY2024
Excludes1
Not coded here. These conditions should NOT be coded together with E05.
  • chronic thyroiditis with transient thyrotoxicosis (E06.2)
  • neonatal thyrotoxicosis (P72.1)

Official Coding Guidelines

Diabetes mellitus (TOC entry)

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

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.4.a
Obesity (TOC entry)

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

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.4.b

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

References

Related Codes

More Specific Codes

E05.0 Thyrotoxicosis with diffuse goiter E05.00 Thyrotoxicosis with diffuse goiter without thyrotoxic crisis or storm E05.01 Thyrotoxicosis with diffuse goiter with thyrotoxic crisis or storm E05.1 Thyrotoxicosis with toxic single thyroid nodule E05.10 Thyrotoxicosis with toxic single thyroid nodule without thyrotoxic crisis or storm E05.11 Thyrotoxicosis with toxic single thyroid nodule with thyrotoxic crisis or storm E05.2 Thyrotoxicosis with toxic multinodular goiter E05.20 Thyrotoxicosis with toxic multinodular goiter without thyrotoxic crisis or storm E05.21 Thyrotoxicosis with toxic multinodular goiter with thyrotoxic crisis or storm E05.3 Thyrotoxicosis from ectopic thyroid tissue E05.30 Thyrotoxicosis from ectopic thyroid tissue without thyrotoxic crisis or storm E05.31 Thyrotoxicosis from ectopic thyroid tissue with thyrotoxic crisis or storm E05.4 Thyrotoxicosis factitia E05.40 Thyrotoxicosis factitia without thyrotoxic crisis or storm E05.41 Thyrotoxicosis factitia with thyrotoxic crisis or storm E05.8 Other thyrotoxicosis E05.80 Other thyrotoxicosis without thyrotoxic crisis or storm E05.81 Other thyrotoxicosis with thyrotoxic crisis or storm E05.9 Thyrotoxicosis, unspecified E05.90 Thyrotoxicosis, unspecified without thyrotoxic crisis or storm E05.91 Thyrotoxicosis, unspecified with thyrotoxic crisis or storm

Related Codes in E05

E05.0 Thyrotoxicosis with diffuse goiter E05.00 Thyrotoxicosis with diffuse goiter without thyrotoxic crisis or storm E05.01 Thyrotoxicosis with diffuse goiter with thyrotoxic crisis or storm E05.1 Thyrotoxicosis with toxic single thyroid nodule E05.10 Thyrotoxicosis with toxic single thyroid nodule without thyrotoxic crisis or storm E05.11 Thyrotoxicosis with toxic single thyroid nodule with thyrotoxic crisis or storm E05.2 Thyrotoxicosis with toxic multinodular goiter E05.20 Thyrotoxicosis with toxic multinodular goiter without thyrotoxic crisis or storm E05.21 Thyrotoxicosis with toxic multinodular goiter with thyrotoxic crisis or storm E05.3 Thyrotoxicosis from ectopic thyroid tissue E05.30 Thyrotoxicosis from ectopic thyroid tissue without thyrotoxic crisis or storm E05.31 Thyrotoxicosis from ectopic thyroid tissue with thyrotoxic crisis or storm E05.4 Thyrotoxicosis factitia E05.40 Thyrotoxicosis factitia without thyrotoxic crisis or storm E05.41 Thyrotoxicosis factitia with thyrotoxic crisis or storm E05.8 Other thyrotoxicosis E05.80 Other thyrotoxicosis without thyrotoxic crisis or storm E05.81 Other thyrotoxicosis with thyrotoxic crisis or storm E05.9 Thyrotoxicosis, unspecified E05.90 Thyrotoxicosis, unspecified without thyrotoxic crisis or storm
Search all 70,000+ ICD-10-CM codes →
Reviewed by Prajwal Shrestha, CPC, CRC
Certified Professional Coder (CPC) and Certified Risk Adjustment Coder (CRC) · AAPC Member ID 01997614 · About · Editorial policy · Content last reviewed: 2025-10-01

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