2025 ICD-10-CM Diagnosis Code K05.2

Aggressive periodontitis

  • K05.2 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2025 edition of ICD-10-CM K05.2 became effective on October 1, 2024.
  • This is the American ICD-10-CM version of K05.2 – other international versions of ICD-10 K05.2 may differ.

Applicable To

  • Acute pericoronitis

Type 1 Excludes

  • acute apical periodontitis (K04.4)
  • periapical abscess (K04.7)
  • periapical abscess with sinus (K04.6)

The following code(s) above K05.2 contain annotation back-references

 that may be applicable to K05.2:

  • K00-K95  Diseases of the digestive system
  • K05  Gingivitis and periodontal diseases

Clinical Information

  • Inflammation and loss of periodontium that is characterized by rapid attachment loss and bone destruction in the presence of little local factors such as dental plaque and dental calculus. This highly destructive form of periodontitis often occurs in young people and was called early-onset periodontitis, but this disease also appears in old people.

Code 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 K05.2:

  • Type 1 Excludes: K04.4
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