K00.4Disturbances in tooth formation
Code usage status
Primary diagnosis
May be used as the primary diagnosis
Apply only when it matches the confirmed diagnosis and the documented clinical record.
Specificity
Complete code in the classification
Use when the diagnosis matches and no exclusion applies.
- Chapter XI
- Diseases of the digestive system
- Group K00-K14
- Diseases of oral cavity, salivary glands and jaws
- Official Vietnamese name
- Rối loạn tạo răng
- Additional WHO coding guidance
- Aplasia and hypoplasia of cementum Dilaceration of tooth Enamel hypoplasia (neonatal)(postnatal)(pr enatal) Regional odontodysplasia Turner tooth Excl.: Hutchinson teeth and mulberry molars in congenital syphilis (A50.5) mottled teeth (K00.3)
Related K00 codes
K00
Disorders of tooth development and eruption
K00.0
Primary diagnosis candidate
Anodontia
K00.1
Primary diagnosis candidate
Supernumerary teeth
K00.2
Primary diagnosis candidate
Abnormalities of size and form of teeth
K00.3
Primary diagnosis candidate
Mottled teeth
K00.5
Primary diagnosis candidate
Hereditary disturbances in tooth structure, not elsewhere classified
K00.6
Primary diagnosis candidate
Disturbances in tooth eruption
K00.7
Primary diagnosis candidate
Teething syndrome
K00.8
Primary diagnosis candidate
Other disorders of tooth development
K00.9
Primary diagnosis candidate
Disorder of tooth development, unspecified
Clinical record checklist
View coding guide →- Confirm that the code matches the final documented diagnosis.
- Use one primary-diagnosis code and record only relevant additional conditions.
- Review Ministry indicators, inclusions, exclusions and notes.
- Do not infer a diagnosis beyond the clinical record.
2026 regulatory basis
Indicators are taken from columns 24–29 of the classification accompanying Circular 06/2026/TT-BYT, cross-referenced with Decision 1849/QĐ-BYT and Official Dispatch 4059/BYT-BH.
