2026 ICD-10-CM Diagnosis Code K03.81Cracked tooth
ICD-10-CM Codes›K00–K95›K00-K14›K03
- Billable — Valid for Submission
- Not Chronic
K03.81 is a billable ICD-10-CM diagnosis code for cracked tooth. 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 cracked crown. 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
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Cracked crown
- Cracked root
- Cracked tooth
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Type 1 Excludes
- asymptomatic craze lines in enamel - omit code
- broken or fractured tooth due to trauma S02.5
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
- Cracked tooth - K03.81
External Cause of Injuries IndexGuidance
References for this code in the External Cause of Injuries Index.
- Cracked tooth
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
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 K03.81 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About K03.81Overview
Is K03.81 (Other specified diseases of hard tissues of teeth) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report cracked tooth on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does K03.81 group to?
When cracked tooth 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 K03.81?
Under the General Equivalence Mappings, cracked tooth converts to ICD-9-CM 521.81 (cracked tooth). The mapping is a direct match.
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.
