2025 ICD-10-CM Diagnosis Code J35.1

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Hypertrophy of tonsils

  • J35.1 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 J35.1 became effective on October 1, 2024.
  • This is the American ICD-10-CM version of J35.1 – other international versions of ICD-10 J35.1 may differ.

Applicable To

  • Enlargement of tonsils

Type 1 Excludes

  • hypertrophy of tonsils with tonsillitis (J35.0-)

The following code(s) above J35.1 contain annotation back-references

 that may be applicable to J35.1:

  • J00-J99  Diseases of the respiratory system

Approximate Synonyms

  • Hypertrophy (enlargement) of tonsil
  • Hypertrophy of lingual tonsil

ICD-10-CM J35.1 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
  • 154 Other ear, nose, mouth and throat diagnoses with mcc
  • 155 Other ear, nose, mouth and throat diagnoses with cc
  • 156 Other ear, nose, mouth and throat diagnoses without cc/mcc

Convert J35.1 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

Code annotations containing back-references to J35.1:

  • Type 1 Excludes: J03

Diagnosis Index entries containing back-references to J35.1:

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