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ICD-10-CM 2027 diagnosis code

K05.22Aggressive periodontitis, generalized

Not billable — use a more specific code

K05.22 is a header code, so it can't be reported by itself. Choose one of the 4 more specific codes beneath it.

Code last changed in FY2017 (effective October 1, 2016). Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About K05.22

K05.22 is the ICD-10-CM diagnosis code for aggressive periodontitis, generalized. It belongs to category K05 (gingivitis and periodontal diseases), block K00-K14 (diseases of oral cavity and salivary glands) and chapter 11 (diseases of the digestive system). It is a header code, so it can't be reported by itself; one of its 4 subcodes must be used instead.

Within K05.2 (aggressive periodontitis), K05.22 is specifically for aggressive periodontitis, generalized. Related codes cover unspecified (K05.20) and localized (K05.21).

To report this condition, pick the subcode that matches the documentation: K05.221 (slight), K05.222 (moderate), K05.223 (severe) and K05.229 (unspecified severity).

Use an additional code to identify: alcohol abuse and dependence (F10.-), exposure to environmental tobacco smoke (Z77.22), exposure to tobacco smoke in the perinatal period (P96.81), history of tobacco dependence (Z87.891), occupational exposure to environmental tobacco smoke (Z57.31) and 2 more.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015, and changed in FY2017 (expanded into subcodes).

Specific codes under K05.22

Notes that apply from higher levels

Instructions written at a parent level also apply to K05.22.

› From K05.2 Aggressive periodontitis
Excludes1
  • acute apical periodontitis (K04.4)
  • periapical abscess (K04.7)
  • periapical abscess with sinus (K04.6)
› From K05 Gingivitis and periodontal diseases
Use additional code
  • code to identify:
  • alcohol abuse and dependence (F10.-)
  • exposure to environmental tobacco smoke (Z77.22)
  • exposure to tobacco smoke in the perinatal period (P96.81)
  • history of tobacco dependence (Z87.891)
  • occupational exposure to environmental tobacco smoke (Z57.31)
  • tobacco dependence (F17.-)
  • tobacco use (Z72.0)

Broader instructions also apply from Chapter 11: Diseases of the digestive system.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • FY2017 (effective 10/1/2016): Expanded — no longer billable

Common questions about K05.22

Is K05.22 billable?

No. K05.22 is a header code. Report one of its more specific subcodes instead.