ICD-10 Code K03.8 – Other specified diseases of hard tissues of teeth (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K03.8 – Other specified diseases of hard tissues of teeth
What it is
K03.8 identifies a dental condition affecting the hard tissues of teeth that does not fit a more specific ICD-10 category. Use it for documented abnormalities of enamel, dentin, or cementum when the record names another specified hard-tissue disorder.
Clinical signs
Clinical features vary; refer to documentation. Findings may include visible hard-tissue defects, discoloration, wear, or structural changes noted on exam or imaging, but the exact diagnosis should be stated in the record.
When to use this code
Use K03.8 when the dentist or clinician documents a specific hard-tissue disorder of the teeth that is not otherwise classified in ICD-10-CM. It is appropriate when the chart clearly describes the condition, but no more specific code applies. Check documentation if the note only says “tooth abnormality” or “dental defect.”
Do not use for
Do not use K03.8 for caries, pulp disease, periodontal disease, or routine tooth wear without a documented specified disorder. If the diagnosis is nonspecific or better classified elsewhere, choose the more accurate code.
Coding tip
Assign K03.8 only when the provider documents a named hard-tissue condition and no more specific ICD-10 code matches.