Benign Neoplasm of Thyroid Gland ICD-10-CM Coding

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.

ICD-10-CM Code For Benign Neoplasm Of Thyroid Gland: Group Overview

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

ICD-10-CM Code	Description
D34	Benign neoplasm of thyroid gland

ICD-10-CM Code

Description

D34

Benign neoplasm of thyroid gland

DRG Codes

6 rows

DRG Code	Description
011	Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with MCC
012	Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with CC
013	Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy without CC/MCC
643	Endocrine Disorders with MCC
644	Endocrine Disorders with CC
645	Endocrine 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

References

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.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.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.

ICD-10-CM Code	Description
D34	Benign neoplasm of thyroid gland

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

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

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

When to Use

ICD-10-CM Codes

DRG Codes

Typical Clinical Scenarios

Related Codes

References

When to Use

ICD-10-CM Codes

DRG Codes

Typical Clinical Scenarios

Related Codes

References

ICD-10-CM Code For Benign Neoplasm Of Thyroid Gland: Group Overview

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

ICD-10-CM Code For Benign Neoplasm Of Thyroid Gland: Group Overview

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

When to Use

ICD-10-CM Codes

DRG Codes

Typical Clinical Scenarios

Related Codes

What conditions are included under ICD-10-CM code `D34`?

Why is accurate coding within `D34` important for billing and claims?

How does `D34` relate to endocrine function documentation?

Which DRG groupings might be relevant to encounters coded with `D34`?

What clinical details should be documented when assigning `D34`?

References

When to Use

ICD-10-CM Codes

DRG Codes

Typical Clinical Scenarios

Related Codes

What conditions are included under ICD-10-CM code `D34`?

Why is accurate coding within `D34` important for billing and claims?

How does `D34` relate to endocrine function documentation?

Which DRG groupings might be relevant to encounters coded with `D34`?

What clinical details should be documented when assigning `D34`?

References