2026 ICD-10-CM Diagnosis Code E05Thyrotoxicosis [hyperthyroidism]
ICD-10-CM E05
E05 is a non-billable ICD-10-CM category code for thyrotoxicosis [hyperthyroidism], so it cannot be submitted on claims. Use a more specific code from this category instead, such as E05.00, E05.01, E05.10, and E05.11.
Code Identity
ICD-10-CM Code
E05
Billable Status
No — Non-Billable Category
Code Describes
Thyrotoxicosis [hyperthyroidism]
Chapter
E00-E07
Disorders of thyroid gland
Code Classification
Specific Coding for Thyrotoxicosis [hyperthyroidism]Overview
Non-specific codes like E05 require more characters. Use one of these billable codes instead:
E05.0 for Thyrotoxicosis with diffuse goiter
Use E05.00 for Thyrotoxicosis with diffuse goiter without thyrotoxic crisis or storm
Use E05.01 for Thyrotoxicosis with diffuse goiter with thyrotoxic crisis or storm
E05.1 for Thyrotoxicosis with toxic single thyroid nodule
Use E05.10 for Thyrotoxicosis with toxic single thyroid nodule without thyrotoxic crisis or storm
Use E05.11 for Thyrotoxicosis with toxic single thyroid nodule with thyrotoxic crisis or storm
E05.2 for Thyrotoxicosis with toxic multinodular goiter
Use E05.20 for Thyrotoxicosis with toxic multinodular goiter without thyrotoxic crisis or storm
Use E05.21 for Thyrotoxicosis with toxic multinodular goiter with thyrotoxic crisis or storm
E05.3 for Thyrotoxicosis from ectopic thyroid tissue
Use E05.30 for Thyrotoxicosis from ectopic thyroid tissue without thyrotoxic crisis or storm
Use E05.31 for Thyrotoxicosis from ectopic thyroid tissue with thyrotoxic crisis or storm
E05.4 for Thyrotoxicosis factitia
Use E05.40 for Thyrotoxicosis factitia without thyrotoxic crisis or storm
Use E05.41 for Thyrotoxicosis factitia with thyrotoxic crisis or storm
E05.8 for Other thyrotoxicosis
Use E05.80 for Other thyrotoxicosis without thyrotoxic crisis or storm
Use E05.81 for Other thyrotoxicosis with thyrotoxic crisis or storm
E05.9 for Thyrotoxicosis, unspecified
Use E05.90 for Thyrotoxicosis, unspecified without thyrotoxic crisis or storm
Use E05.91 for Thyrotoxicosis, unspecified with thyrotoxic crisis or storm
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Type 1 Excludes
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Clinical InformationClinical
Thyrotoxicosis
a hypermetabolic syndrome caused by excess thyroid hormones which may come from endogenous or exogenous sources. the endogenous source of hormone may be thyroid hyperplasia; thyroid neoplasms; or hormone-producing extrathyroidal tissue. thyrotoxicosis is characterized by nervousness; tachycardia; fatigue; weight loss; heat intolerance; and excessive sweating.Chronic Thyroiditis with Transient Thyrotoxicosis|Chronic thyroiditis with transient thyrotoxicosis
persistent and long-standing thyroiditis associated with temporary elevations of thyroid hormones.Neonatal Thyrotoxicosis|Infantile Hyperthyroidism
a hypermetabolic syndrome characterized by tachycardia, palpitations, tremor, weight loss, and moist skin that is caused by the elevation of thyroid hormone levels in the serum of the newborn infant or thyroid-axis receptor activation, most commonly due to transplacental passage of thyroid stimulating globulins.Other Thyrotoxicosis with Thyrotoxic Crisis or Storm|Other thyrotoxicosis with thyrotoxic crisis or storm
evidence of other thyrotoxicosis with thyrotoxic crisis or storm not specified elsewhere.Other Thyrotoxicosis without Thyrotoxic Crisis or Storm|Other thyrotoxicosis without thyrotoxic crisis or storm
evidence of other thyrotoxicosis without thyrotoxic crisis or storm not specified elsewhere.Thyrotoxicosis
a hypermetabolic syndrome caused by the elevation of thyroid hormone levels in the serum. signs and symptoms include tachycardia, palpitations, tremor, weight loss, warm weather intolerance, and moist skin. causes include graves disease, toxic nodular goiter, toxic thyroid nodule, and lymphocytic thyroiditis.Thyrotoxicosis Factitia with Thyrotoxic Crisis or Storm|Thyrotoxicosis factitia with thyrotoxic crisis or storm
evidence of thyrotoxicosis factitia with thyrotoxic crisis or storm.Thyrotoxicosis Factitia without Thyrotoxic Crisis or Storm|Thyrotoxicosis factitia without thyrotoxic crisis or storm
evidence of thyrotoxicosis factitia without thyrotoxic crisis or storm.Thyrotoxicosis from Ectopic Thyroid Tissue with Thyrotoxic Crisis|Thyrotoxicosis from ectopic thyroid tissue with thyrotoxic crisis
evidence of thyrotoxicosis from ectopic thyroid tissue with thyrotoxic crisis.Thyrotoxicosis from Ectopic Thyroid Tissue without Thyrotoxic Crisis|Thyrotoxicosis from ectopic thyroid tissue without thyrotoxic crisis
evidence of thyrotoxicosis from ectopic thyroid tissue without thyrotoxic crisis.Thyrotoxicosis with Diffuse Goiter with Thyrotoxic Crisis or Storm|Thyrotoxicosis with diffuse goiter with thyrotoxic crisis or storm
evidence of thyrotoxicosis with diffuse goiter with thyrotoxic crisis or storm.Thyrotoxicosis with Diffuse Goiter without Thyrotoxic Crisis|Thyrotoxicosis with diffuse goiter without thyrotoxic crisis
evidence of thyrotoxicosis with diffuse goiter without thyrotoxic crisis.Thyrotoxicosis with Toxic Multinodular Goiter with Thyrotoxic Crisis|Thyrotoxicosis with toxic multinodular goiter with thyrotoxic crisis
evidence of thyrotoxicosis with toxic multinodular goiter with thyrotoxic crisis.Thyrotoxicosis with Toxic Multinodular Goiter without Thyrotoxic Crisis|Thyrotoxicosis with toxic multinodular goiter without thyrotoxic crisis
evidence of thyrotoxicosis with toxic multinodular goiter without thyrotoxic crisis.Thyrotoxicosis with Toxic Single Thyroid Nodule with Thyrotoxic Crisis|Thyrotoxicosis with toxic single thyroid nodule with thyrotoxic crisis
evidence of thyrotoxicosis with toxic single thyroid nodule with thyrotoxic crisis.Thyrotoxicosis with Toxic Single Thyroid Nodule without Thyrotoxic Crisis|Thyrotoxicosis with toxic sing thyroid nodule without thyrotoxic crisis
evidence of thyrotoxicosis with toxic single thyroid nodule without thyrotoxic crisis.Thyrotoxicosis, Unspecified with Thyrotoxic Crisis or Storm|Thyrotoxicosis, unspecified with thyrotoxic crisis or storm
evidence of thyrotoxicosis, unspecified with thyrotoxic crisis or storm.Thyrotoxicosis, Unspecified without Thyrotoxic Crisis or Storm|Thyrotoxicosis, unspecified without thyrotoxic crisis or storm
evidence of thyrotoxicosis, unspecified without thyrotoxic crisis or storm.
Patient EducationClinical
Hyperthyroidism
Hyperthyroidism, or overactive thyroid, happens when your thyroid gland makes more thyroid hormones than your body needs.
The full article covers:
- What is hyperthyroidism?
- What causes hyperthyroidism?
- Who is at risk for hyperthyroidism?
- What are the symptoms of hyperthyroidism?
- What other problems can hyperthyroidism cause?
- How is hyperthyroidism diagnosed?
- What are the treatments for hyperthyroidism?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Code HistoryHistory
FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.
Questions About E05Overview
Is E05 (Thyrotoxicosis [hyperthyroidism]) a billable code?
No. This is a category header that groups the codes for thyrotoxicosis [hyperthyroidism], and headers cannot be submitted on claims. Claims for thyrotoxicosis [hyperthyroidism] need a more specific code from this category, such as E05.00, E05.01, and E05.10.
