Loading...

    Explore
    • Policy Monitoring
    • Live Policy Feed
    • Billing Codes
    • NPI Medicare & Medicaid
    • Healthcare Providers
    • Health Insurance Payers
    • States
    • Service Lines
    • Taxonomy Codes
    Lookup tools
    • Billing Code Lookup
    • CPT Modifier Lookup
    • Provider Taxonomy Code Lookup
    • Healthcare Provider & Facility Lookup
    • Health Insurance Payer Lookup
    • Payer Contact Directory

    Policy & Benchmark Tools

    • Prior Authorization Lookup
    • Coverage Criteria Lookup
    • Timely Filing Lookup
    • Billing Code Reimbursement Rates
    • Payer Comparison Dashboard
    • Facility Comparison Dashboard
    • All tools

    Company

    • About OpenPayer
    • Data Sources
    • Trek Health
    OpenPayerby Trek Health
    LinkedInYouTube

    © 2026 Trek Health. All rights reserved.

    OpenPayer is built and maintained by Trek Health.

    v1.0.28
    OpenPayerBilling CodesDisorders of thyroid glandICD-10-CM e01-iodine-deficiency-thyroid-disorders
    Ask Trek AI about this page

    ICD-10-CM Code For Iodine-Deficiency Related Thyroid Disorders And Allied Conditions: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group E01 includes iodine-deficiency related thyroid disorders such as endemic goiter and other conditions caused by lack of iodine that affect thyroid size and function. These ICD-10-CM diagnosis codes are used to document clinical scenarios involving hypothyroid states, goiter formation, and related thyroid dysfunction, capturing disease severity and organ involvement relevant to this group. Accurate coding within the ICD-10-CM E01 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

    Customize your policy alerts

    Sign up for ICD-10-CM Code For Iodine-Deficiency Related Thyroid Disorders And Allied Conditions: Group Overview policy alerts

    Get alerted when relevant policies change without checking for updates manually.

    Monitor payer policy activity

    Receive email alerts as soon as relevant payer policies are published or updated.

    ICD-10-CM E01: Iodine-deficiency Related Thyroid Disorders And Allied Conditions Overview

    The ICD-10-CM E01 group represents iodine-deficiency related thyroid disorders and related conditions affecting the thyroid gland and systemic thyroid function. These diagnoses target thyroid hormone production abnormalities due to insufficient iodine and allied clinical manifestations. Accurate coding ensures complete clinical documentation and supports proper reimbursement for care related to thyroid disease management.

    Table of contents

    Progress1 / 6

    Explore openpayer tools

    • Billing CodesCPT, HCPCS, DRG & more
    • Reimbursement RatesCommercial vs. Medicare rate reports
    • ProvidersHospitals & facilities
    • PayersPlans & market footprint
    • Taxonomy CodesNUCC specialty codes
    • ModifiersCPT modifiers & usage
    • Prior AuthorizationPA policies by payer & drug
    • Timely FilingFiling deadlines by payer
    • Coverage CriteriaMedical necessity by payer
    • Payer ContactsClaims, PA & appeals contacts
    View all tools

    When to Use

    Use codes from this group when a clinician documents thyroid disease attributed to iodine deficiency, such as endemic goiter or hypothyroidism due to insufficient iodine. Assign these codes to capture the specific cause and clinical manifestations when iodine deficiency is the primary etiology recorded in the medical record.

    ICD-10-CM Codes

    4 rows

    ICD-10-CM CodeDescription
    E01.0Iodine-deficiency related diffuse (endemic) goiter
    E01.1Iodine-deficiency related multinodular (endemic) goiter
    E01.2Iodine-deficiency related (endemic) goiter, unspecified
    E01.8Other iodine-deficiency related thyroid disorders and allied conditions

    DRG Codes

    3 rows

    DRG CodeDescription
    643Endocrine Disorders with MCC
    644Endocrine Disorders with CC
    645Endocrine Disorders without CC/MCC

    Typical Clinical Scenarios

    • A school-aged child from a region with limited access to iodized salt presents for routine pediatric care with slowed growth, fatigue, and a palpable, non-tender enlarged thyroid gland. Laboratory testing shows elevated thyroid-stimulating hormone with low serum iodine and features consistent with endemic goiter related to insufficient dietary iodine; a diagnosis from this group is assigned to capture iodine-deficiency–induced thyroid enlargement. Typical codes: E01.0, E01.8.
    • An adult woman in prenatal care is found to have hypothyroid symptoms (fatigue, cold intolerance, weight gain) and laboratory evidence of decreased thyroid hormone levels; the clinician documents hypothyroidism due to iodine deficiency affecting pregnancy management. Because the thyroid dysfunction is attributed specifically to iodine insufficiency during gestation, a code from this group is used to indicate the etiology and guide appropriate monitoring. Typical codes: E01.1, E01.2.
    • An elderly patient presents to the emergency department with progressive dyspnea and dysphagia from a very large multinodular goiter causing compressive symptoms; history reveals long-standing untreated iodine-deficiency goiter with recent acute worsening. The acute compressive airway and esophageal symptoms related to chronic iodine-deficiency thyroid disease prompt assignment of a code from this group to reflect the underlying iodine-related thyroid disorder as a comorbidity contributing to the current presentation. Typical codes: E01.0, E01.8.

    Related Codes

    E00-CONGENITAL-IODINE-DEFICIENCY-SYNDROME

    ICD-10-CM Code For Congenital Iodine-Deficiency Syndrome: Group Overview

    E02-SUBCLINICAL-IODINE-DEFICIENCY-HYPOTHYROIDISM

    ICD-10-CM Code For Subclinical Iodine-Deficiency Hypothyroidism: Group Overview

    E03-OTHER-HYPOTHYROIDISM

    ICD-10-CM Code For Other Hypothyroidism: Group Overview

    E04-OTHER-NONTOXIC-GOITER

    ICD-10-CM Code For Other Nontoxic Goiter: Group Overview

    E05-THYROTOXICOSIS-HYPERTHYROIDISM

    ICD-10-CM Code For Thyrotoxicosis Hyperthyroidism: Group Overview

    E06-THYROIDITIS

    ICD-10-CM Code For Thyroiditis: Group Overview

    E07-OTHER-DISORDERS-OF-THYROID

    ICD-10-CM Code For Other Disorders Of Thyroid: Group Overview

    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
    Published by

    Trek Health powers OpenPayer with a leading commercial payer intelligence platform, seamlessly converting fragmented payer data into actionable insights for provider organizations.

    Trek Health ingests and normalizes Transparency in Coverage data and payer policy updates to give provider organizations a clear view of how commercial reimbursement behaves across markets, payers, and services. Our platform transforms raw payer disclosures into structured intelligence that supports contract evaluation, payer negotiations, and service line strategy. By combining market benchmarks with ongoing policy visibility, Trek helps teams identify variability, risk, and opportunity in commercial reimbursement. The result is faster insight, stronger negotiating positions, and more informed financial decisions.