ICD-10 Code K03.89 – Other specified diseases of hard tissues of teeth (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K03.89 – Other specified diseases of hard tissues of teeth
What it is
K03.89 identifies a disorder of the hard tissues of the teeth that is specifically documented but does not fit a more exact ICD-10 category. Use it when the record names another hard-tissue condition of the teeth, and no better code is available.
Clinical signs
Clinical features vary; refer to documentation. Findings may include visible enamel or dentin abnormalities, structural tooth changes, or other hard-tissue defects noted on exam or imaging.
When to use this code
Use this code when the clinician documents a specific hard-tissue tooth disorder that is not otherwise classified in K03. It is appropriate for charted diagnoses such as an unspecified but named enamel or dentin condition, if the note supports a hard-tissue problem. If the diagnosis is vague, check documentation before assigning it.
Do not use for
Do not use K03.89 for soft-tissue oral conditions, caries, or trauma-related tooth injury unless the provider clearly documents a separate hard-tissue disease. Avoid it when a more specific ICD-10 code is available.
Coding tip
Code the exact documented tooth hard-tissue disorder first, and use K03.89 only when no more specific option fits.