ICD-10-CM FY2027 diagnosis code

M26.21: Malocclusion, Angle's class

Header code: not billableValid for dates of service October 1, 2026 to September 30, 2027

M26.21 groups related diagnoses under malocclusion, angle's class. It cannot be used on a claim by itself. Choose the billable code below that matches the patient's record.

Billable codes under M26.21

M26.211Malocclusion, Angle's class I
M26.212Malocclusion, Angle's class II
M26.213Malocclusion, Angle's class III
M26.219Malocclusion, Angle's class, unspecified

Other codes in M26.2 Anomalies of dental arch relationship

M26.20Unspecified anomaly of dental arch relationship
M26.22Open occlusal relationshipheader
M26.23Excessive horizontal overlap
M26.24Reverse articulation
M26.25Anomalies of interarch distance
M26.29Other anomalies of dental arch relationship

M26.21 questions

Is M26.21 a billable code?

No. M26.21 is a header code that groups 4 more specific codes. Use one of the billable codes listed on this page instead.

What does M26.21 mean?

M26.21 is the ICD-10-CM code for Malocclusion, Angle's class. It is in chapter 13, Diseases of the musculoskeletal system and connective tissue (M00-M99).

Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.