ICD10
ICD-10 Code E05.8: Other thyrotoxicosis
Reviewed by HealthAssure Clinical TeamUpdated 26 May 2026
What is this code?
ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for Endocrine, nutritional and metabolic diseases (E00-E89).
When is it used?
- May be used when a clinician documents other thyrotoxicosis in a patient's medical record.
- May appear in hospital records, claims, referrals, and clinical documentation.
- This code may act more like a grouping or parent code, so a more specific child code may be used in final documentation when available.
What it does not mean
- A code alone does not explain severity, treatment plan, or outcome.
- A medical code should not be treated as a substitute for a doctor's diagnosis or advice.
- This entry may represent a broader category rather than the most specific billable code.
Code hierarchy
chapter
4Endocrine, nutritional and metabolic diseases (E00-E89)
block
E00-E07Disorders of thyroid gland
category
E05Thyrotoxicosis [hyperthyroidism]
currentE05
Official coding notes
Inclusion terms
- Overproduction of thyroid-stimulating hormone
Where you may see this code
You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen.
Related specialists
EndocrinologistGeneral Physician
Related tests
TSH
Commonly reviewed in hyperthyroidism evaluation.
Free T4
Often reviewed alongside TSH in thyroid assessment.
Free T3
May help clarify thyroid hormone excess in hyperthyroid states.
Related codes
Sibling codes
Mapped diagnoses and classifications
SNOMED_CT 237505003high
Apathetic thyrotoxicosis
Source: SNOMED International ICD-10 map
SNOMED_CT 722942005high
Familial hyperthyroidism
Source: SNOMED International ICD-10 map
SNOMED_CT 716743006high
Familial non-autoimmune autosomal dominant hyperthyroidism
Source: SNOMED International ICD-10 map
SNOMED_CT 62052002high
Hyperthyroidism secondary to amiodarone
Source: SNOMED International ICD-10 map
SNOMED_CT 67723002high
Hyperthyroidism secondary to radio contrast dye
Source: SNOMED International ICD-10 map
SNOMED_CT 1366539009high
Resistance to thyroid stimulating hormone syndrome
Source: SNOMED International ICD-10 map
Coding guidelines
Compatibility
Legacy code aligns to an official FY 2026 category. Frontend should resolve to the official category page and surface the billable child codes.
Legacy codes
E05.8
Replacement codes
E05.80 — Other thyrotoxicosis without thyrotoxic crisis or stormE05.81 — Other thyrotoxicosis with thyrotoxic crisis or storm
Common synonyms
Other thyrotoxicosis
Frequently asked questions
About this content
This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.