ICD-10 Code K00.7 – Teething syndrome (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K00.7 – Teething syndrome
What it is
K00.7 identifies teething syndrome, the normal eruption of primary teeth in infants and toddlers. It is used when symptoms are attributed to tooth eruption rather than to infection or another dental disorder.
Clinical signs
Common findings include sore or swollen gums, drooling, fussiness, and a tendency to chew on objects. Clinical features vary; refer to documentation if the presentation is atypical or severe.
When to use this code
Use K00.7 when the record documents teething as the reason for the visit or the source of mild oral discomfort. It also fits when the clinician notes eruption-related irritability or gum tenderness without another diagnosis explaining the symptoms. Check documentation if fever, dehydration, or illness is present.
Do not use for
Do not use this code for dental caries, gingivitis, oral infection, or other specific oral conditions. If the chart does not clearly link the symptoms to teething, check documentation.
Coding tip
Code K00.7 only when the provider explicitly documents teething or tooth eruption as the cause.