ICD-10-CM M26: Dentofacial anomalies [including malocclusion]

ICD-10-CM Diagnosis Code (2025)

Official Description for M26

Dentofacial anomalies [including malocclusion]

Coding Notes & Guidelines for M26

Excludes1: Not Coded Here
  • acromegaly (E22.0)
  • Robin's syndrome (Q87.0)
Excludes1: Not Coded Here
  • bruxism (F45.8)
  • teeth-grinding NOS (F45.8)
Excludes1: Not Coded Here

centric occlusion NOS (M26.59)

Excludes2: Not Included Here

embedded and impacted teeth (K01.-)

Excludes2: Not Included Here
  • current temporomandibular joint dislocation (S03.0)
  • current temporomandibular joint sprain (S03.4)
Inclusion Terms

Entire maxillary tuberosity

Inclusion Terms

Neutro-occlusion

Inclusion Terms
  • Disto-occlusion Division I
  • Disto-occlusion Division II
Inclusion Terms

Mesio-occlusion

Inclusion Terms

Anterior open bite

Inclusion Terms

Posterior open bite

Inclusion Terms

Excessive horizontal overjet

Inclusion Terms

Crossbite (anterior) (posterior)

Inclusion Terms
  • Midline deviation of dental arch
  • Overbite (excessive) deep
  • Overbite (excessive) horizontal
  • Overbite (excessive) vertical
  • Posterior lingual occlusion of mandibular teeth
Inclusion Terms
  • Abnormal spacing of fully erupted tooth or teeth NOS
  • Displacement of fully erupted tooth or teeth NOS
  • Transposition of fully erupted tooth or teeth NOS
Inclusion Terms

Diastema of fully erupted tooth or teeth NOS

Inclusion Terms
  • Tipped tooth or teeth
  • Tipping of fully erupted tooth
Inclusion Terms
  • Extruded tooth
  • Infraeruption of tooth or teeth
  • Supraeruption of tooth or teeth
Inclusion Terms

Lack of adequate intermaxillary vertical dimension of fully erupted teeth

Inclusion Terms
  • Excessive intermaxillary vertical dimension of fully erupted teeth
  • Loss of occlusal vertical dimension of fully erupted teeth
Inclusion Terms

Insufficient anterior occlusal guidance

Inclusion Terms

Balancing side interference

Inclusion Terms
  • Centric occlusion (of teeth) NOS
  • Malocclusion due to abnormal swallowing
  • Malocclusion due to mouth breathing
  • Malocclusion due to tongue, lip or finger habits
Inclusion Terms

Temporomandibular joint disorder NOS

Inclusion Terms

Anterior soft tissue impingement on teeth

Inclusion Terms

Posterior soft tissue impingement on teeth

Child Codes (More Specific Codes for M26):

M26.0 - Major anomalies of jaw size M26.00 - Unspecified anomaly of jaw size M26.01 - Maxillary hyperplasia M26.02 - Maxillary hypoplasia M26.03 - Mandibular hyperplasia M26.04 - Mandibular hypoplasia M26.05 - Macrogenia M26.06 - Microgenia M26.07 - Excessive tuberosity of jaw M26.09 - Other specified anomalies of jaw size M26.1 - Anomalies of jaw-cranial base relationship M26.10 - Unspecified anomaly of jaw-cranial base relationship M26.11 - Maxillary asymmetry M26.12 - Other jaw asymmetry M26.19 - Other specified anomalies of jaw-cranial base relationship M26.2 - Anomalies of dental arch relationship M26.20 - Unspecified anomaly of dental arch relationship M26.21 - Malocclusion, Angle's class M26.211 - Malocclusion, Angle's class I M26.212 - Malocclusion, Angle's class II M26.213 - Malocclusion, Angle's class III M26.219 - Malocclusion, Angle's class, unspecified M26.22 - Open occlusal relationship M26.220 - Open anterior occlusal relationship M26.221 - Open posterior occlusal relationship M26.23 - Excessive horizontal overlap M26.24 - Reverse articulation M26.25 - Anomalies of interarch distance M26.29 - Other anomalies of dental arch relationship M26.3 - Anomalies of tooth position of fully erupted tooth or teeth M26.30 - Unspecified anomaly of tooth position of fully erupted tooth or teeth M26.31 - Crowding of fully erupted teeth M26.32 - Excessive spacing of fully erupted teeth M26.33 - Horizontal displacement of fully erupted tooth or teeth M26.34 - Vertical displacement of fully erupted tooth or teeth M26.35 - Rotation of fully erupted tooth or teeth M26.36 - Insufficient interocclusal distance of fully erupted teeth (ridge) M26.37 - Excessive interocclusal distance of fully erupted teeth M26.39 - Other anomalies of tooth position of fully erupted tooth or teeth M26.4 - Malocclusion, unspecified M26.5 - Dentofacial functional abnormalities M26.50 - Dentofacial functional abnormalities, unspecified M26.51 - Abnormal jaw closure M26.52 - Limited mandibular range of motion M26.53 - Deviation in opening and closing of the mandible M26.54 - Insufficient anterior guidance M26.55 - Centric occlusion maximum intercuspation discrepancy M26.56 - Non-working side interference M26.57 - Lack of posterior occlusal support M26.59 - Other dentofacial functional abnormalities M26.6 - Temporomandibular joint disorders M26.60 - Temporomandibular joint disorder, unspecified M26.601 - Right temporomandibular joint disorder, unspecified M26.602 - Left temporomandibular joint disorder, unspecified M26.603 - Bilateral temporomandibular joint disorder, unspecified M26.609 - Unspecified temporomandibular joint disorder, unspecified side M26.61 - Adhesions and ankylosis of temporomandibular joint M26.611 - Adhesions and ankylosis of right temporomandibular joint M26.612 - Adhesions and ankylosis of left temporomandibular joint M26.613 - Adhesions and ankylosis of bilateral temporomandibular joint M26.619 - Adhesions and ankylosis of temporomandibular joint, unspecified side M26.62 - Arthralgia of temporomandibular joint M26.621 - Arthralgia of right temporomandibular joint M26.622 - Arthralgia of left temporomandibular joint M26.623 - Arthralgia of bilateral temporomandibular joint M26.629 - Arthralgia of temporomandibular joint, unspecified side M26.63 - Articular disc disorder of temporomandibular joint M26.631 - Articular disc disorder of right temporomandibular joint M26.632 - Articular disc disorder of left temporomandibular joint M26.633 - Articular disc disorder of bilateral temporomandibular joint M26.639 - Articular disc disorder of temporomandibular joint, unspecified side M26.64 - Arthritis of temporomandibular joint M26.641 - Arthritis of right temporomandibular joint M26.642 - Arthritis of left temporomandibular joint M26.643 - Arthritis of bilateral temporomandibular joint M26.649 - Arthritis of unspecified temporomandibular joint M26.65 - Arthropathy of temporomandibular joint M26.651 - Arthropathy of right temporomandibular joint M26.652 - Arthropathy of left temporomandibular joint M26.653 - Arthropathy of bilateral temporomandibular joint M26.659 - Arthropathy of unspecified temporomandibular joint M26.69 - Other specified disorders of temporomandibular joint M26.7 - Dental alveolar anomalies M26.70 - Unspecified alveolar anomaly M26.71 - Alveolar maxillary hyperplasia M26.72 - Alveolar mandibular hyperplasia M26.73 - Alveolar maxillary hypoplasia M26.74 - Alveolar mandibular hypoplasia M26.79 - Other specified alveolar anomalies M26.8 - Other dentofacial anomalies M26.81 - Anterior soft tissue impingement M26.82 - Posterior soft tissue impingement M26.89 - Other dentofacial anomalies M26.9 - Dentofacial anomaly, unspecified

About ICD-10-CM Code M26 (Dentofacial anomalies [including malocclusion])

ICD-10-CM code M26 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM M26 became effective on October 1, 2024.

This page provides detailed information about M26 - Dentofacial anomalies [including malocclusion]. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Dentofacial anomalies [including malocclusion].