2026 ICD-10-CM Diagnosis Code K05.11Chronic gingivitis, non-plaque induced

ICD-10-CM Codes›K00–K95›K00-K14›K05

ICD-10-CM K05.11
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

K05.11 is a billable ICD-10-CM diagnosis code for chronic gingivitis, non-plaque induced. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 157 through 159. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Any dental condition including traumatic injury; Caries, periodontitis, and other preventable dental conditions; and Disorders of teeth and gingiva.

Code Identity

ICD-10-CM Code
K05.11
Billable Status
Yes — Valid for Submission
Code Describes
Chronic gingivitis, non-plaque induced
Short Description
Chronic gingivitis, non-plaque induced
Same as the full description in the CMS dataset.
Parent Code
K05.1
Chronic gingivitis

Code Classification

ChapterK00–K95Diseases of the digestive system
SectionK00-K14Diseases of oral cavity and salivary glands
CategoryK05Gingivitis and periodontal diseases
This CodeK05.11Chronic gingivitis, non-plaque induced

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Allergic gingival disease
  • Allergic gingivitis
  • Atrophic senile gingivitis
  • Chronic gingivitis due to non-plaque gingival disease
  • Contact gingivostomatitis
  • Contact mucous membrane inflammation
  • Contact stomatitis
  • Cotton-roll gingivitis
  • Gingival disease caused by drug
  • Gingival disease caused by virus
  • Gingival disease due to erythema multiforme
  • Gingivitis caused by Candida
  • Gingivitis caused by drug
  • Gingivitis caused by Histoplasma
  • Gingivitis due to leukemia
  • Gingivostomatitis
  • Hypersensitivity gingivitis
  • Plasma cell gingivitis
  • Pyostomatitis vegetans
  • Pyostomatitis vegetans of gingival mucosa
  • Ulceration of gingivae
  • Ulcerative gingivitis
  • Ulcerative stomatitis

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Disturbance(s)
      • keratinization NEC
        • gingiva
          • nonplaque induced
    • Gingivitis
      • chronic (desquamative) (hyperplastic) (simple marginal) (pregnancy associated) (ulcerative)
        • nonplaque induced
    • Infection, infected, infective(opportunistic)
      • gingiva (chronic)
        • nonplaque induced
    • Infection, infected, infective(opportunistic)
      • gum (chronic)
        • nonplaque induced
    • Inflammation, inflamed, inflammatory(with exudation)
      • gum
        • nonplaque induced
    • Ulcer, ulcerated, ulcerating, ulceration, ulcerative
      • gingivitis
        • nonplaque induced

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR DEN001
Any dental condition including traumatic injury
Default principal diagnosis: inpatient No · outpatient No
CCSR DEN003
Caries, periodontitis, and other preventable dental conditions
Default principal diagnosis: inpatient No · outpatient No
CCSR DIG002
Disorders of teeth and gingiva
Default principal diagnosis: inpatient Yes · outpatient Yes
CCSR DEN002
Nontraumatic dental conditions
Default principal diagnosis: inpatient No · outpatient No

Clinical InformationClinical

  • Tumor Protein 63|CUSP|Chronic Ulcerative Stomatitis Protein|Keratinocyte Transcription Factor KET|TP63|Transformation-Related Protein 63|Tumor Protein p73-Like|p40|p51|p63|p73L

    tumor protein 63 (680 aa, ~77 kda) is encoded by the human tp63 gene. this protein plays a role in the mediation of both transcription and limb morphogenesis.

  • Ulcerative Stomatitis

    inflammation of the mouth mucosa associated with the presence of ulcers.

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.

Convert K05.11 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
523.11 Chr gingivitis-nonplaque
Exact Match The mapping is direct, with no qualifiers.

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 K05.11Overview

Is K05.11 (Chronic gingivitis) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report chronic gingivitis, non-plaque induced on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does K05.11 group to?

When chronic gingivitis, non-plaque induced is the principal diagnosis on an inpatient stay, it groups to MS-DRG 157, 158, 159, with relative weights from 0.7085 to 1.7168 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of K05.11?

Under the General Equivalence Mappings, chronic gingivitis, non-plaque induced converts to ICD-9-CM 523.11 (chr gingivitis-nonplaque). The mapping is a direct match.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.