M26.22Open occlusal relationship

M26.22 is the ICD-10-CM diagnosis code for open occlusal relationship. It belongs to category M26 (dentofacial anomalies [including malocclusion]), block M26-M27 (dentofacial anomalies [including malocclusion] and other disorders of jaw) and chapter 13 (diseases of the musculoskeletal system and connective tissue). It is a header code, so it can't be reported by itself; one of its 2 subcodes must be used instead.

Within M26.2 (anomalies of dental arch relationship), M26.22 is specifically for open occlusal relationship. Related codes cover unspecified anomaly of dental arch relationship (M26.20), malocclusion, Angle's class (M26.21), excessive horizontal overlap (M26.23), Reverse articulation (M26.24), anomalies of interarch distance (M26.25) and other anomalies of dental arch relationship (M26.29).

To report this condition, pick the subcode that matches the documentation: M26.220 (relationship) and M26.221 (relationship).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.