ICD-10-CM K05: Gingivitis and periodontal diseases

ICD-10-CM Diagnosis Code (2025)

Official Description for K05

Gingivitis and periodontal diseases

Coding Notes & Guidelines for K05

Excludes1: Not Coded Here
  • acute necrotizing ulcerative gingivitis (A69.1)
  • herpesviral [herpes simplex] gingivostomatitis (B00.2)
Excludes1: Not Coded Here
  • acute apical periodontitis (K04.4)
  • periapical abscess (K04.7)
  • periapical abscess with sinus (K04.6)
Excludes1: Not Coded Here

chronic apical periodontitis (K04.5)

Excludes2: Not Included Here

leukoplakia of gingiva (K13.21)

Code First

, if applicable, diseases of the digestive system complicating pregnancy (O99.61-)

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)
Inclusion Terms
  • Acute gingivitis NOS
  • Plaque induced gingival disease
Inclusion Terms
  • Desquamative gingivitis (chronic)
  • Gingivitis (chronic) NOS
  • Hyperplastic gingivitis (chronic)
  • Pregnancy associated gingivitis
  • Simple marginal gingivitis (chronic)
  • Ulcerative gingivitis (chronic)
Inclusion Terms
  • Chronic gingivitis NOS
  • Gingivitis NOS
Inclusion Terms

Acute pericoronitis

Inclusion Terms

Periodontal abscess

Inclusion Terms
  • Chronic pericoronitis
  • Complex periodontitis
  • Periodontitis NOS
  • Simplex periodontitis
Inclusion Terms

Juvenile periodontosis

Inclusion Terms
  • Combined periodontic-endodontic lesion
  • Narrow gingival width (of periodontal soft tissue)

Child Codes (More Specific Codes for K05):

K05.0 - Acute gingivitis K05.00 - Acute gingivitis, plaque induced K05.01 - Acute gingivitis, non-plaque induced K05.1 - Chronic gingivitis K05.10 - Chronic gingivitis, plaque induced K05.11 - Chronic gingivitis, non-plaque induced K05.2 - Aggressive periodontitis K05.20 - Aggressive periodontitis, unspecified K05.21 - Aggressive periodontitis, localized K05.211 - Aggressive periodontitis, localized, slight K05.212 - Aggressive periodontitis, localized, moderate K05.213 - Aggressive periodontitis, localized, severe K05.219 - Aggressive periodontitis, localized, unspecified severity K05.22 - Aggressive periodontitis, generalized K05.221 - Aggressive periodontitis, generalized, slight K05.222 - Aggressive periodontitis, generalized, moderate K05.223 - Aggressive periodontitis, generalized, severe K05.229 - Aggressive periodontitis, generalized, unspecified severity K05.3 - Chronic periodontitis K05.30 - Chronic periodontitis, unspecified K05.31 - Chronic periodontitis, localized K05.311 - Chronic periodontitis, localized, slight K05.312 - Chronic periodontitis, localized, moderate K05.313 - Chronic periodontitis, localized, severe K05.319 - Chronic periodontitis, localized, unspecified severity K05.32 - Chronic periodontitis, generalized K05.321 - Chronic periodontitis, generalized, slight K05.322 - Chronic periodontitis, generalized, moderate K05.323 - Chronic periodontitis, generalized, severe K05.329 - Chronic periodontitis, generalized, unspecified severity K05.4 - Periodontosis K05.5 - Other periodontal diseases K05.6 - Periodontal disease, unspecified

About ICD-10-CM Code K05 (Gingivitis and periodontal diseases)

ICD-10-CM code K05 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM K05 became effective on October 1, 2024.

This page provides detailed information about K05 - Gingivitis and periodontal diseases. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Gingivitis and periodontal diseases.