2026 ICD-10-CM Diagnosis Code K03.3Pathological resorption of teeth
ICD-10-CM Codes›K00–K95›K00-K14›K03
- Billable — Valid for Submission
- Not Chronic
K03.3 is a billable ICD-10-CM diagnosis code for pathological resorption 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, Disorders of teeth and gingiva, and Nontraumatic dental conditions.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Apical pressure resorption
- Atrophy of edentulous alveolar ridge
- Cementoclasia
- Cervical root resorption
- Early tooth exfoliation
- Edentulous alveolar ridge with labial resorption
- External inflammatory resorption
- External non-apical resorption of root of tooth
- External resorption of tooth
- Idiopathic external resorption of root of tooth
- Idiopathic resorption of root of tooth
- Internal resorption of root of tooth
- Internal resorption of tooth
- Internal resorption of tooth following dental trauma
- Invasive cervical resorption
- Pathologic resorption of root of tooth
- Pathological external resorption of tooth due to impacted tooth
- Pathological resorption of tooth
- Periodontitis due to cervical root resorption
- Precocious exfoliation of teeth due to idiopathic root resorption
- Precocious exfoliation of teeth due to root resorption following trauma
- Pre-eruptive intracoronal resorption of tooth
- Premature tooth loss
- Progressive internal resorption of tooth caused by bacteria
- Replacement resorption of surface of root of tooth following traumatic injury
- Resorption of apex of tooth root
- Resorption of root of tooth caused by orthodontic force
- Resorption of surface of tooth
- Resorption of tooth caused by bacteria
- Tooth loss
- Transient internal resorption of tooth due to and following dental trauma
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Inclusion Terms
- Internal granuloma of pulp
- Resorption of teeth (external)
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
- pulp, internal (tooth) - K03.3
- Pathologic, pathological - See Also: condition;
- resorption, tooth - K03.3
- dental (roots) - K03.3
- teeth (external) (internal) (pathological) (roots) - K03.3
External Cause of Injuries IndexGuidance
References for this code in the External Cause of Injuries Index.
- Granuloma
- pulp, internal (tooth)
- Pathologic, pathological
- resorption, tooth
- Resorption
- dental (roots)
- Resorption
- teeth (external) (internal) (pathological) (roots)
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Tooth Loss
the failure to retain teeth as a result of disease or injury.Tooth Loss
one or more teeth lost/dislodged from the mouth.
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 K03.3 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About K03.3Overview
Is K03.3 (Other diseases of hard tissues of teeth) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report pathological resorption of teeth on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does K03.3 group to?
When pathological resorption 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 K03.3?
Under the General Equivalence Mappings, pathological resorption of teeth converts to ICD-9-CM 521.40 (path resorption NOS), 521.41 (path resorption-internal), and 521.42 (path resorption-external). 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.
