2026 ICD-10-CM Diagnosis Code K03.89Other specified diseases of hard tissues of teeth

ICD-10-CM Codes›K00–K95›K00-K14›K03

ICD-10-CM K03.89
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

K03.89 is a billable ICD-10-CM diagnosis code for other specified diseases of hard tissues of teeth. 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
K03.89
Billable Status
Yes — Valid for Submission
Code Describes
Other specified diseases of hard tissues of teeth
Short Description
Other specified diseases of hard tissues of teeth
Same as the full description in the CMS dataset.
Parent Code
K03.8
Other specified diseases of hard tissues of teeth

Code Classification

ChapterK00–K95Diseases of the digestive system
SectionK00-K14Diseases of oral cavity and salivary glands
CategoryK03Other diseases of hard tissues of teeth
This CodeK03.89Other specified diseases of hard tissues of teeth

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Alveolitis of jaw
  • Cementitis
  • Crazing of enamel
  • Demineralization of tooth
  • Dental plaque retention factor on tooth
  • Dental root sensitivity
  • Infantile melanodontia
  • Insufficient clinical crown height
  • Insufficient clinical crown height due to altered passive eruption
  • Insufficient clinical crown height due to fracture
  • Irradiated enamel
  • Odontoclasia
  • Plunger cusp
  • Sensitive dentin
  • Tooth sensitivity at cementoenamel junction
  • Tooth sensitivity to brush or floss
  • Tooth sensitivity to cold
  • Tooth sensitivity to heat

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.

    • Decalcification
      • teeth
    • Dentin
      • sensitive
    • Disease, diseased
      • tooth, teeth
        • hard tissues
          • specified NEC
    • Irradiated enamel(tooth, teeth)
    • Melanodontia, infantile
    • Melanodontoclasia
    • Odontoclasia
    • Sensitive, sensitivity
      • dentin

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

Patient EducationClinical

Tooth Disorders

Your teeth are made of a hard, bonelike material. There are four parts:

The full article covers:

  • What are teeth?
  • What are tooth disorders?
  • What causes tooth disorders?
  • What are the symptoms of tooth disorders?
  • How are tooth disorders diagnosed?
  • What are the treatments for tooth disorders?
  • Can tooth disorders be prevented?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert K03.89 to ICD-9-CMHistory

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

ICD-9-CM
521.05 Odontoclasia
Approximate The match is approximate rather than exact.
ICD-9-CM
521.89 Dis hard tiss teeth NEC
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 K03.89Overview

Is K03.89 (Other specified diseases of hard tissues of teeth) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report other specified diseases of hard tissues of teeth on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does K03.89 group to?

When other specified diseases of hard tissues of teeth 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 K03.89?

Under the General Equivalence Mappings, other specified diseases of hard tissues of teeth converts to ICD-9-CM 521.05 (odontoclasia) and 521.89 (dis hard tiss teeth 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.