2026 ICD-10-CM Diagnosis Code K05Gingivitis and periodontal diseases

ICD-10-CM Codes›K00–K95›K00-K14›K05

ICD-10-CM K05
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

K05 is a non-billable ICD-10-CM category code for gingivitis and periodontal diseases, so it cannot be submitted on claims. Use a more specific code from this category instead, such as K05.00, K05.01, K05.10, and K05.11.

Code Identity

ICD-10-CM Code
K05
Billable Status
No — Non-Billable Category
Code Describes
Gingivitis and periodontal diseases
Chapter
K00-K14
Diseases of oral cavity and salivary glands

Code Classification

ChapterK00–K95Diseases of the digestive system
SectionK00-K14Diseases of oral cavity and salivary glands
CategoryK05Gingivitis and periodontal diseases
This CodeK05Gingivitis and periodontal diseases

Specific Coding for Gingivitis and periodontal diseasesOverview

Non-specific codes like K05 require more characters. Use one of these billable codes instead:

  • K05.0 for Acute gingivitis

  • Use K05.00 for Acute gingivitis, plaque induced

  • Use K05.01 for Acute gingivitis, non-plaque induced

  • K05.1 for Chronic gingivitis

  • Use K05.10 for Chronic gingivitis, plaque induced

  • Use K05.11 for Chronic gingivitis, non-plaque induced

  • K05.2 for Aggressive periodontitis

  • Use K05.20 for Aggressive periodontitis, unspecified

  • K05.21 for Aggressive periodontitis, localized

  • K05.22 for Aggressive periodontitis, generalized

  • K05.3 for Chronic periodontitis

  • Use K05.30 for Chronic periodontitis, unspecified

  • K05.31 for Chronic periodontitis, localized

  • K05.32 for Chronic periodontitis, generalized

  • Use K05.4 for Periodontosis

  • Use K05.5 for Other periodontal diseases

  • Use K05.6 for Periodontal disease, unspecified

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

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

Patient EducationClinical

Gum Disease

If you have gum disease, you're not alone. Many U.S. adults currently have some form of the disease. It ranges from simple gum inflammation, called gingivitis, to serious damage to the tissue and bone supporting the teeth. In the worst cases, you can lose teeth.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About K05Overview

Is K05 (Gingivitis and periodontal diseases) a billable code?

No. This is a category header that groups the codes for gingivitis and periodontal diseases, and headers cannot be submitted on claims. Claims for gingivitis and periodontal diseases need a more specific code from this category, such as K05.00, K05.01, and K05.10.