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Free Medical Coding > ICD10 CM > 2025 ICD-10-CM Codes > 2025 ICD-10-CM Codes E00-E89 – Endocrine, nutritional and metabolic diseases (E00-E89) > 2025 ICD-10-CM Codes E00-E07 – Disorders of thyroid gland (E00-E07) > 2025 ICD-10-CM Codes E06 – Thyroiditis (E06) > 2025 ICD-10-CM Diagnosis Code E06.3 – Autoimmune thyroiditis (E06.3)

2025 ICD-10-CM Diagnosis Code E06.3 – Autoimmune thyroiditis (E06.3)

2016201720182019202020212022202320242025Billable/Specific Code
  • E06.3 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2024 edition of ICD-10-CM E06.3 became effective on October 1, 2022.
  • This is the American ICD-10-CM version of E06.3 – other international versions of ICD-10 E06.3 may differ.

ICD-10-CM E06.3 is grouped within Diagnostic Related Group(s):

  • 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

Applicable To

  • Hashimoto’s thyroiditis
  • Hashitoxicosis (transient)
  • Lymphadenoid goiter
  • Lymphocytic thyroiditis
  • Struma lymphomatosa

Code History

  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2016 (effective 10/1/2015): No change
  • 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 E06.3:

  • thyroiditis > Autoimmune
  • thyroid > autoimmune NOS (systemic) M35.9
  • Hashimoto\’s (struma lymphomatosa) > Disease, diseased
  • lymphadenoid > Goiter (plunging) (substernal) E04.9
  • Hashimoto > Struma
  • lymphomatosa > Struma
  • autoimmune > Thyroiditis E06.9
  • lymphadenoid > chronic (nonspecific) (sclerosing) E06.5
  • lymphocytic > chronic (nonspecific) (sclerosing) E06.5
  • lymphoid > chronic (nonspecific) (sclerosing) E06.5
  • Hashimoto\’s (struma lymphomatosa) > Thyroiditis E06.9
  • lymphocytic (chronic) > Thyroiditis E06.9
  • lymphoid > Thyroiditis E06.9
  • lymphomatous > Thyroiditis E06.9

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