2026 ICD-10-CM Diagnosis Code K06.9Disorder of gingiva and edentulous alveolar ridge, unspecified

ICD-10-CM Codes›K00–K95›K00-K14›K06

ICD-10-CM K06.9
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

K06.9 is a billable ICD-10-CM diagnosis code for disorder of gingiva and edentulous alveolar ridge, unspecified. 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, Disorders of teeth and gingiva, and Nontraumatic dental conditions.

Code Identity

ICD-10-CM Code
K06.9
Billable Status
Yes — Valid for Submission
Code Describes
Disorder of gingiva and edentulous alveolar ridge, unspecified
Short Description
Disorder of gingiva and edentulous alveolar ridge, unsp
Parent Code
K06
Other disorders of gingiva and edentulous alveolar ridge

Code Classification

ChapterK00–K95Diseases of the digestive system
SectionK00-K14Diseases of oral cavity and salivary glands
CategoryK06Other disorders of gingiva and edentulous alveolar ridge
This CodeK06.9Disorder of gingiva and edentulous alveolar ridge, unspecified

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Acute gingivitis
  • Acute gingivitis due to non-plaque induced gingival disease
  • Allergic contact gingivitis caused by nickel
  • Allergic gingival disease
  • Allergic gingivitis
  • Chronic gingival condition
  • Gingival disease
  • Gingival disease caused by bacteria
  • Gingival disease caused by dental restorative material
  • Gingival disease caused by drug
  • Gingival disease caused by Mycobacterium leprae
  • Gingival disease caused by Neisseria gonorrhoeae
  • Gingival disease caused by oral contraceptive use
  • Gingival disease caused by Streptococcus
  • Gingival disease caused by Treponema pallidum
  • Gingival disease caused by varicella-zoster virus
  • Gingival disease caused by virus
  • Gingival disease co-occurrent with diabetes mellitus
  • Gingival disease due to ascorbic acid deficiency
  • Gingival disease due to celiac disease
  • Gingival disease due to chemical burn
  • Gingival disease due to dental plaque
  • Gingival disease due to genetic disorder
  • Gingival disease due to lupus erythematosus
  • Gingival disease due to malnutrition
  • Gingival disease due to menstrual cycle
  • Gingival disease due to puberty
  • Gingival disease due to recurrent oral herpes simplex infection
  • Gingival disease due to systemic sclerosis
  • Gingival disease due to thermal injury
  • Gingival disease due to traumatic injury
  • Gingival disease due to ulcerative colitis
  • Gingival disease exacerbated by disorder of cellular component of blood
  • Hypersensitivity gingivitis
  • Lesion of gingivae
  • Non-plaque induced gingival disease
  • Oral syphilis
  • Tenderness of digestive structure
  • Tenderness of gums

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.

    • Disease, diseased
      • alveolar ridge
        • edentulous
    • Disease, diseased
      • edentulous (alveolar) ridge
    • Disease, diseased
      • gingiva
    • Disease, diseased
      • gum

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 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

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 K06.9 to ICD-9-CMHistory

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

ICD-9-CM
523.9 Gingiv/periodont dis NOS
Approximate The match is approximate rather than exact.

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 K06.9Overview

Is K06.9 (Other disorders of gingiva and edentulous alveolar ridge) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report disorder of gingiva and edentulous alveolar ridge, unspecified on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does K06.9 group to?

When disorder of gingiva and edentulous alveolar ridge, unspecified 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 K06.9?

Under the General Equivalence Mappings, disorder of gingiva and edentulous alveolar ridge, unspecified converts to ICD-9-CM 523.9 (gingiv/periodont dis NOS). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.