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    v1.0.30
    OpenPayerBilling CodesBenign neoplasms, except benign neuroendocrine tumorsICD-10-CM d34-benign-neoplasm-of-thyroid-gland
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    ICD-10-CM Code For Benign Neoplasm Of Thyroid Gland: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group D34 includes benign neoplasms of the thyroid gland such as follicular and other nonmalignant thyroid nodules and adenomas. These ICD-10-CM diagnosis codes are used to document clinical encounters for noncancerous thyroid masses, capturing lesion location, size when clinically relevant, and any related endocrine dysfunction. Accurate coding within the ICD-10-CM D34 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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    ICD-10-CM D34: Benign Neoplasm Of Thyroid Gland Overview

    This code group represents benign tumors of the thyroid gland, including nodules and adenomas that are nonmalignant. These conditions affect the endocrine system and can impact thyroid hormone production and local neck structures. Accurate coding is important for capturing the clinical picture, supporting appropriate claim adjudication, and informing treatment planning.

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    When to Use

    Assign a code from this group when a clinician documents a benign thyroid tumor such as a thyroid nodule or adenoma without malignant features. Use these codes for encounters focused on evaluation, monitoring, or management of noncancerous thyroid growths.

    ICD-10-CM Codes

    1 rows

    ICD-10-CM CodeDescription
    D34Benign neoplasm of thyroid gland

    DRG Codes

    6 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
    643Endocrine Disorders with MCC
    644Endocrine Disorders with CC
    645Endocrine Disorders without CC/MCC

    Typical Clinical Scenarios

    • A 45-year-old woman presents to her primary care clinician with a palpable, slowly enlarging, non-tender nodule in the right thyroid lobe discovered during a routine neck exam. Ultrasound shows a well-circumscribed, solid thyroid nodule without suspicious features and fine-needle aspiration cytology returns benign follicular cells; a benign thyroid neoplasm diagnosis is assigned to explain the benign nodular lesion and guide surveillance. Typical codes: D34
    • A 30-year-old pregnant patient is evaluated after routine prenatal ultrasound detects an incidental small, asymptomatic thyroid mass; endocrinology follows with targeted ultrasound and FNA that confirm a benign neoplasm. Because the lesion is benign and requires monitoring rather than oncologic treatment during pregnancy, a benign thyroid neoplasm diagnosis is used for documentation and prenatal care planning. Typical codes: D34
    • A 67-year-old man with longstanding multinodular goiter develops progressive neck compression symptoms with dysphagia and mild dyspnea; imaging identifies a dominant benign-appearing thyroid mass causing local compressive effects, and surgical pathology after lobectomy confirms a benign neoplasm. The benign neoplasm code is assigned as the primary diagnosis for the resected nonmalignant thyroid tumor and for postoperative care and follow-up. Typical codes: D34

    Related Codes

    D10-BENIGN-NEOPLASM-OF-MOUTH-AND-PHARYNX

    ICD-10-CM Code For Benign Neoplasm Of Mouth And Pharynx: Group Overview

    D11-BENIGN-NEOPLASM-MAJOR-SALIVARY-GLANDS

    ICD-10-CM Code For Benign Neoplasm Of Major Salivary Glands: Group Overview

    D12-BENIGN-NEOPLASM-COLON-RECTUM-ANUS

    ICD-10-CM Code For Benign Neoplasm Of Colon Rectum Anus And Anal Canal: Group Overview

    D13-BENIGN-NEOPLASM-OTHER-DIGESTIVE

    ICD-10-CM Code For Benign Neoplasm Of Other And Ill-Defined Parts Of Digestive System: Group Overview

    D14-BENIGN-MIDDLE-EAR-AND-RESPIRATORY-NEOPLASMS

    ICD-10-CM Code For Benign Neoplasm Of Middle Ear And Respiratory System: Group Overview

    D15-BENIGN-NEOPLASM-INTRATHORACIC-ORGANS

    ICD-10-CM Code For Benign Neoplasm Of Other And Unspecified Intrathoracic Organs: Group Overview

    D16-BENIGN-NEOPLASM-OF-BONE

    ICD-10-CM Code For Benign Neoplasm Of Bone And Articular Cartilage: Group Overview

    D17-BENIGN-LIPOMATOUS-NEOPLASM

    ICD-10-CM Code For Benign Lipomatous Neoplasm: Group Overview

    D18-HEMANGIOMA-AND-LYMPHANGIOMA

    ICD-10-CM Code For Hemangioma And Lymphangioma, Any Site: Group Overview

    D19-BENIGN-MESOTHELIAL-NEOPLASMS

    ICD-10-CM Code For Benign Neoplasm Of Mesothelial Tissue: Group Overview

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    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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