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    v1.0.28
    OpenPayerBilling CodesDisorders of thyroid glandICD-10-CM e03-other-hypothyroidism
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    ICD-10-CM Code For Other Hypothyroidism: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group E03 includes acquired hypothyroidism diagnoses not classified in other thyroid disorder categories, such as postprocedural hypothyroidism and unspecified hypothyroidism, covering conditions of insufficient thyroid hormone production. These ICD-10-CM diagnosis codes are used to document clinical scenarios that capture disease severity, presence of complications like myxedema, and the need for long-term endocrine management or medication monitoring. Accurate coding within the ICD-10-CM E03 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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    ICD-10-CM E03: Other Hypothyroidism Overview

    The ICD-10-CM E03 group represents other hypothyroidism diagnoses affecting thyroid hormone production and metabolic regulation. These conditions target the endocrine system, specifically insufficient thyroid function not classified elsewhere. Accurate coding matters because it ensures complete clinical documentation and supports correct reimbursement for services related to diagnosis and long-term management.

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    When to Use

    Use a code from this group when a patient has documented hypothyroidism that is not classified elsewhere or when hypothyroidism follows a procedure affecting the thyroid. Select the code that reflects documented etiology and specificity, such as postprocedural or unspecified, to match the clinical record.

    ICD-10-CM Codes

    8 rows

    ICD-10-CM CodeDescription
    E03.0Congenital hypothyroidism with diffuse goiter
    E03.1Congenital hypothyroidism without goiter
    E03.2Hypothyroidism due to medicaments and other exogenous substances
    E03.3Postinfectious hypothyroidism
    E03.4Atrophy of thyroid (acquired)
    E03.5Myxedema coma
    E03.8Other specified hypothyroidism
    E03.9Hypothyroidism, unspecified

    DRG Codes

    10 rows

    DRG CodeDescription
    011Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with MCC
    012Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with CC
    013Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy without CC/MCC
    080Nontraumatic Stupor and Coma with MCC
    081Nontraumatic Stupor and Coma without MCC
    643Endocrine Disorders with MCC
    644Endocrine Disorders with CC
    645Endocrine Disorders without CC/MCC
    791Prematurity with Major Problems
    793Full Term Neonate with Major Problems

    Typical Clinical Scenarios

    • A middle-aged patient with known autoimmune thyroiditis presents to the outpatient endocrinology clinic for routine follow-up complaining of fatigue, cold intolerance, and weight gain despite stable levothyroxine dosing. Laboratory testing shows a mildly elevated TSH with a low free T4 consistent with persistent hypothyroidism without myxedema; the visit documents adjustment of chronic thyroid hormone replacement. Typical codes: E03.9, E03.8
    • An elderly patient is brought to the emergency department with progressive confusion, hypothermia, bradycardia, and hypotension after missing multiple doses of thyroid replacement; clinicians diagnose severe hypothyroid state requiring acute inpatient stabilization and treatment. Because this is an acute decompensation of thyroid function manifesting as other systemic signs, a code for other hypothyroidism is assigned to capture the hypothyroid etiology. Typical codes: E03.4, E03.1
    • A young adult with a history of pituitary surgery for a pituitary adenoma attends endocrinology follow-up with laboratory evidence of low TSH and low free T4 attributable to central (secondary) hypothyroidism caused by pituitary dysfunction; management focuses on chronic hormone replacement and monitoring. The diagnosis is coded as other hypothyroidism due to central origin to reflect the pituitary-related etiology. Typical codes: E03.2, E03.3

    Related Codes

    E00-CONGENITAL-IODINE-DEFICIENCY-SYNDROME

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

    E01-IODINE-DEFICIENCY-THYROID-DISORDERS

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

    E02-SUBCLINICAL-IODINE-DEFICIENCY-HYPOTHYROIDISM

    ICD-10-CM Code For Subclinical Iodine-Deficiency 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.
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