Ankylosis of teeth

This code describes the pathological fusion of a tooth root to the alveolar bone, preventing normal physiological tooth movement. This condition can affect primary or permanent dentition, leading to infraocclusion and potential malocclusion.

Use this code when documentation clearly indicates a diagnosis of ankylosis of a tooth or teeth. This typically occurs when a tooth fails to erupt fully or is submerged below the occlusal plane due to fusion with the bone. Documentation should specify the presence of ankylosis.

• Do not confuse with impaction (K01.-) or embedded teeth (K01.-) where there is no fusion to bone.
• Consider additional codes for associated conditions like malocclusion (K07.-) if present and documented.
• Ensure the provider's documentation explicitly states "ankylosis" rather than just "submerged" or "infraoccluded" to support this specific diagnosis.