2025 ICD-10-CM Diagnosis Code E06.1

by

Subacute thyroiditis

  • E06.1 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2025 edition of ICD-10-CM E06.1 became effective on October 1, 2024.
  • This is the American ICD-10-CM version of E06.1 – other international versions of ICD-10 E06.1 may differ.

Applicable To

  • de Quervain thyroiditis
  • Giant-cell thyroiditis
  • Granulomatous thyroiditis
  • Nonsuppurative thyroiditis
  • Viral thyroiditis

Type 1 Excludes

  • autoimmune thyroiditis (E06.3)

The following code(s) above E06.1 contain annotation back-references

 that may be applicable to E06.1:

  • E00-E89  Endocrine, nutritional and metabolic diseases
  • E06  Thyroiditis

Approximate Synonyms

  • Thyroiditis, subacute

Clinical Information

  • Self-limited inflammation of the thyroid gland characterized by the presence of multinucleated giant cells. Patients present with neck pain, often associated with fever and dysphagia. The clinical course includes an initial phase of hyperthyroidism, followed by a phase of hypothyroidism, and eventually a return to normal thyroid function.
  • Spontaneously remitting inflammatory condition of the thyroid gland, characterized by fever; muscle weakness; sore throat; severe thyroid pain; and an enlarged damaged gland containing giant cells. The disease frequently follows a viral infection.

ICD-10-CM E06.1 is grouped within Diagnostic Related Group(s) (MS-DRG v42.0):

  • 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

Convert E06.1 to ICD-9-CMCode History

  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
  • 2022 (effective 10/1/2021): No change
  • 2023 (effective 10/1/2022): No change
  • 2024 (effective 10/1/2023): No change
  • 2025 (effective 10/1/2024): No change

Diagnosis Index entries containing back-references to E06.1:

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