Open restoration margins of tooth

This code describes a dental restoration (e.g., filling, crown) that no longer has a sealed interface with the tooth structure, allowing for microleakage. This compromised margin can lead to recurrent caries, pulpal irritation, or sensitivity. It indicates a structural failure of an existing restoration.

Use this code when documentation explicitly states "open margins," "defective margins," "leaking restoration," or similar terminology indicating a loss of seal at the restoration-tooth interface. This applies to any type of direct or indirect restoration exhibiting this specific defect. Supporting documentation includes clinical notes from a dental examination, radiographs showing marginal gaps, or patient complaints related to the compromised restoration.

• Differentiate from recurrent caries (K02.3), which is a consequence, not the defect itself.
• Do not use for initial placement of a restoration; this code signifies a problem with an existing restoration.
• Consider sequencing with codes for any associated conditions, such as recurrent dental caries (K02.3) or pulpitis (K04.0-K04.9), if present.