2026 ICD-10-CM Diagnosis Code K03Other diseases of hard tissues of teeth

ICD-10-CM Codes›K00–K95›K00-K14›K03

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

K03 is a non-billable ICD-10-CM category code for other diseases of hard tissues of teeth, so it cannot be submitted on claims. Use a more specific code from this category instead, such as K03.0, K03.1, K03.2, and K03.3.

Code Identity

ICD-10-CM Code
K03
Billable Status
No — Non-Billable Category
Code Describes
Other diseases of hard tissues of teeth
Chapter
K00-K14
Diseases of oral cavity and salivary glands

Code Classification

ChapterK00–K95Diseases of the digestive system
SectionK00-K14Diseases of oral cavity and salivary glands
CategoryK03Other diseases of hard tissues of teeth
This CodeK03Other diseases of hard tissues of teeth

Specific Coding for Other diseases of hard tissues of teethOverview

Non-specific codes like K03 require more characters. Use one of these billable codes instead:

  • Use K03.0 for Excessive attrition of teeth

  • Use K03.1 for Abrasion of teeth

  • Use K03.2 for Erosion of teeth

  • Use K03.3 for Pathological resorption of teeth

  • Use K03.4 for Hypercementosis

  • Use K03.5 for Ankylosis of teeth

  • Use K03.6 for Deposits [accretions] on teeth

  • Use K03.7 for Posteruptive color changes of dental hard tissues

  • K03.8 for Other specified diseases of hard tissues of teeth

  • Use K03.81 for Cracked tooth

  • Use K03.89 for Other specified diseases of hard tissues of teeth

  • Use K03.9 for Disease of hard tissues of teeth, unspecified

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Type 2 Excludes

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.

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 K03Overview

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

No. This is a category header that groups the codes for other diseases of hard tissues of teeth, and headers cannot be submitted on claims. Claims for other diseases of hard tissues of teeth need a more specific code from this category, such as K03.0, K03.1, and K03.2.