2026 ICD-10-CM Diagnosis Code K00.8Other disorders of tooth development
ICD-10-CM Codes›K00–K95›K00-K14›K00
- Billable — Valid for Submission
- Not Chronic
K00.8 is a billable ICD-10-CM diagnosis code for other disorders of tooth development. 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.
- Abnormal number of teeth
- Absence of teeth
- Color changes during tooth formation
- Congenital hypoplasia of deciduous tooth
- Continued root development of immature permanent tooth following dental trauma
- Developmental abnormality of cusp of tooth
- Developmental abnormality of deciduous tooth
- Developmental anomaly of root of tooth
- Ectopic tooth
- False anodontia
- GAPO syndrome
- Hyperplastic tooth follicle
- Hypoplasia of first permanent molar tooth
- Immature tooth apex
- Incomplete form of root of tooth
- Intrinsic enamel discoloration of erythroblastosis fetalis
- Intrinsic enamel discoloration of porphyria
- Intrinsic staining of tooth
- Intrinsic staining of tooth - drug-induced
- Intrinsic staining of tooth - metabolic disease
- Intrinsic staining of tooth - non-vital tooth
- Intrinsic staining of tooth caused by tetracycline
- Intrinsic staining of tooth due to and following dental trauma
- Intrinsic staining of vital tooth
- Labial ectopic tooth
- Leeway space absent
- Lingual ectopic tooth
- Localized hypoplasia of tooth
- Overeruption of tooth
- Pre-eruptive color change of tooth
- Protrusion of tooth
- Root stunting
- Solitary median maxillary central incisor syndrome
- Thickened dental follicle
- Tooth absent
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Inclusion Terms
- Color changes during tooth formation
- Intrinsic staining of teeth NOS
Type 2 Excludes
- posteruptive color changes K03.7
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.
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
- Change (s) (in) (of) - See Also: Removal;
- during formation - K00.8
- teeth (posteruptive) - K03.7
- during formation - K00.8
- Disorder (of) - See Also: Disease;
- development - K00.9
- specified NEC - K00.8
- Pre-eruptive color change, teeth, tooth - K00.8
- tooth, teeth (hard tissues) (extrinsic) - K03.6
- intrinsic - K00.8
External Cause of Injuries IndexGuidance
References for this code in the External Cause of Injuries Index.
- Change(s) (in) (of)
- color, tooth, teeth
- during formation
- Discoloration
- teeth (posteruptive)
- during formation
- Disorder(of)
- tooth
- development
- specified NEC
- Pre-eruptive color change, teeth, tooth
- Stain, staining
- tooth, teeth (hard tissues) (extrinsic)
- intrinsic
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 K00.8 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About K00.8Overview
Is K00.8 (Disorders of tooth development and eruption) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report other disorders of tooth development on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does K00.8 group to?
When other disorders of tooth development 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 K00.8?
Under the General Equivalence Mappings, other disorders of tooth development converts to ICD-9-CM 520.8 (tooth devel/erup dis 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.
