Gingivitis and periodontal diseases (K05) ICD-10-CM
The K05 code range covers gingivitis and periodontal diseases with 34 ICD-10-CM diagnosis codes. 25 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Use Additional Code
The “use additional code” indicates that a secondary code could be used to further specify the patient’s condition. This note is not mandatory and is only used if enough information is available to assign an additional code.
Codes in the K05 Range 34 codes · 25 billable
- K05 Gingivitis and periodontal diseasesNon-billable
- K05.0 Acute gingivitisNon-billable
- K05.00 Acute gingivitis, plaque induced
- K05.01 Acute gingivitis, non-plaque induced
- K05.1 Chronic gingivitisNon-billable
- K05.10 Chronic gingivitis, plaque induced
- K05.11 Chronic gingivitis, non-plaque induced
- K05.2 Aggressive periodontitisNon-billable
- K05.20 Aggressive periodontitis, unspecified
- K05.21 Aggressive periodontitis, localizedNon-billable
- 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, generalizedNon-billable
- 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 periodontitisNon-billable
- K05.30 Chronic periodontitis, unspecified
- K05.31 Chronic periodontitis, localizedNon-billable
- 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, generalizedNon-billable
- 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
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the K05 range.
Aggressive Periodontitis
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.
Chronic Gingivitis
Chronic painless inflammation of the gums. It is characterized by erythema and edema of the gums and bleeding while brushing the teeth.
Chronic Periodontitis
Chronic inflammation and loss of PERIODONTIUM that is associated with the amount of DENTAL PLAQUE or DENTAL CALCULUS present. Chronic periodontitis occurs mostly in adults and was called adult periodontitis, but this disease can appear in young people.
Gingivitis
Inflammation of gum tissue (GINGIVA) without loss of connective tissue.
Periodontal Diseases
Pathological processes involving the PERIODONTIUM including the gum (GINGIVA), the alveolar bone (ALVEOLAR PROCESS), the DENTAL CEMENTUM, and the PERIODONTAL LIGAMENT.
Periodontosis
A localized aggressive periodontitis, formerly called localized juvenile periodontitis. It is a destructive form of periodontitis characterized by ALVEOLAR BONE LOSS of the MOLARS and INCISORS.
About the K05 Code Range
Gingivitis and periodontal diseases sit within the larger group of diseases of the mouth and salivary glands.
Gingivitis divides into acute (K05.0) and chronic (K05.1) forms, then by whether plaque induces it. Aggressive periodontitis (K05.2) and chronic periodontitis (K05.3) distinguish unspecified, localized, and generalized disease. Localized and generalized forms then distinguish slight, moderate, severe, or unspecified severity.
The remaining categories name periodontosis (K05.4), other periodontal diseases (K05.5), and unspecified periodontal disease (K05.6).
Questions About This Page
How many billable codes are in the K05 range?
Of the 34 codes in this range, 25 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the K05 range classify?
The range classifies gingivitis and periodontal diseases. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
