2026 ICD-10-CM Diagnosis Code K06.3Horizontal alveolar bone loss

ICD-10-CM Codes›K00–K95›K00-K14›K06

ICD-10-CM K06.3
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

K06.3 is a billable ICD-10-CM diagnosis code for horizontal alveolar bone loss. 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. Coders also document this condition as alveolar bone loss. 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
K06.3
Billable Status
Yes — Valid for Submission
Code Describes
Horizontal alveolar bone loss
Short Description
Horizontal alveolar bone loss
Same as the full description in the CMS dataset.
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 CodeK06.3Horizontal alveolar bone loss

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Alveolar bone loss
  • Horizontal alveolar bone loss
  • Horizontal alveolar bone loss surrounding dental implant

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.

    • Loss(of)
      • substance of
        • bone
          • horizontal alveolar

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

Clinical InformationClinical

  • Alveolar Bone Loss

    resorption or wasting of the tooth-supporting bone (alveolar process) in the maxilla or mandible.

Convert K06.3 to ICD-9-CMHistory

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

ICD-9-CM
523.8 Periodontal disease NEC
Approximate The match is approximate rather than exact.

Code History & ChangesHistory

Replacement K06.3 replaces the following previously assigned code(s):

  • K06.8 - Oth disrd of gingiva and edentulous alveolar ridge
FY 2018AddedAdded to the ICD-10-CM code setEffective October 1, 2017.
FY 2019–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About K06.3Overview

Is K06.3 (Other disorders of gingiva and edentulous alveolar ridge) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report horizontal alveolar bone loss on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does K06.3 group to?

When horizontal alveolar bone loss 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 K06.3?

Under the General Equivalence Mappings, horizontal alveolar bone loss converts to ICD-9-CM 523.8 (periodontal disease NEC). 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.