ICD-10-CM > M00-M99 > M26-M27 > M26 > M26.2 > M26.21 M26.21 Malocclusion, Angle's class Non-Billable/Non-Specific Codes M26.211Malocclusion, Angle's class IM26.212Malocclusion, Angle's class IIM26.213Malocclusion, Angle's class IIIM26.219Malocclusion, Angle's class, unspecified