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ICD-10 Code E05.2: Thyrotoxicosis with toxic multinodular goiter

E05.2 is an ICD-10 diagnosis entry used to group records related to Thyrotoxicosis with toxic multinodular goiter. 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. 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).

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 thyrotoxicosis with toxic multinodular goiter 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
  • Toxic nodular goiter NOS

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.

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
E05.2
Replacement codes
E05.20 — Thyrotoxicosis with toxic multinodular goiter without thyrotoxic crisis or stormE05.21 — Thyrotoxicosis with toxic multinodular goiter with thyrotoxic crisis or storm

Common synonyms

Thyrotoxicosis with toxic multinodular goiter

Frequently asked questions

Code details

CodeE05.2
SystemICD10
Display nameThyrotoxicosis with toxic multinodular goiter
ChapterEndocrine, nutritional and metabolic diseases (E00-E89)
BlockDisorders of thyroid gland

Flags

BillableNo
Valid clinical useNo

Source

SourceICD-10
Version2026-annual
Releaseannual
Year2026

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.