Abnormal jaw closure

This code signifies a functional impairment where the mandible does not close properly, leading to an abnormal bite or occlusal relationship. It encompasses conditions where the jaw deviates, locks, or otherwise fails to achieve a normal, stable closed position. This can result from muscular, skeletal, or temporomandibular joint (TMJ) dysfunction.

Apply this code when documentation indicates a patient presents with a malocclusion specifically due to an irregular or dysfunctional jaw closure pattern. This is appropriate for conditions like open bite, crossbite, or other occlusal discrepancies directly attributable to the way the jaw articulates. Supporting documentation should clearly describe the abnormal closure and its impact on occlusion.

• Differentiate from other malocclusions not primarily caused by abnormal closure, such as dental arch discrepancies.
• Consider sequencing this code after a more specific TMJ disorder (e.g., M26.6x) if the abnormal closure is a symptom of the TMJ issue.
• Ensure documentation specifies "abnormal jaw closure" or a similar phrase indicating the functional nature of the malocclusion.