M26

Dentofacial anomalies [including malocclusion]

M26.0

Major anomalies of jaw size

acromegaly (E22.0)
Robin's syndrome (Q87.0)

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

Entire maxillary tuberosity

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

Neutro-occlusion

M26.212

Malocclusion, Angle's class II

Disto-occlusion Division I
Disto-occlusion Division II

M26.213

Malocclusion, Angle's class III

Mesio-occlusion

M26.219

Malocclusion, Angle's class, unspecified

M26.22

Open occlusal relationship

M26.220

Open anterior occlusal relationship

Anterior open bite

M26.221

Open posterior occlusal relationship

Posterior open bite

M26.23

Excessive horizontal overlap

Excessive horizontal overjet

M26.24

Reverse articulation

Crossbite (anterior) (posterior)

M26.25

Anomalies of interarch distance

M26.29

Other anomalies of dental arch relationship

Midline deviation of dental arch
Overbite (excessive) deep
Overbite (excessive) horizontal
Overbite (excessive) vertical
Posterior lingual occlusion of mandibular teeth

M26.3

Anomalies of tooth position of fully erupted tooth or teeth

embedded and impacted teeth (K01.-)

M26.30

Unspecified anomaly of tooth position of fully erupted tooth or teeth

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

M26.31

Crowding of fully erupted teeth

M26.32

Excessive spacing of fully erupted teeth

Diastema of fully erupted tooth or teeth NOS

M26.33

Horizontal displacement of fully erupted tooth or teeth

Tipped tooth or teeth
Tipping of fully erupted tooth

M26.34

Vertical displacement of fully erupted tooth or teeth

Extruded tooth
Infraeruption of tooth or teeth
Supraeruption of tooth or teeth

M26.35

Rotation of fully erupted tooth or teeth

M26.36

Insufficient interocclusal distance of fully erupted teeth (ridge)

Lack of adequate intermaxillary vertical dimension of fully erupted teeth

M26.37

Excessive interocclusal distance of fully erupted teeth

Excessive intermaxillary vertical dimension of fully erupted teeth
Loss of occlusal vertical dimension 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

bruxism (F45.8)
teeth-grinding NOS (F45.8)

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

Insufficient anterior occlusal guidance

M26.55

Centric occlusion maximum intercuspation discrepancy

centric occlusion NOS (M26.59)

M26.56

Non-working side interference

Balancing side interference

M26.57

Lack of posterior occlusal support

M26.59

Other dentofacial functional abnormalities

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

M26.6

Temporomandibular joint disorders

current temporomandibular joint dislocation (S03.0)
current temporomandibular joint sprain (S03.4)

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

Temporomandibular joint disorder NOS

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

M26.69

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

Anterior soft tissue impingement on teeth

M26.82

Posterior soft tissue impingement

Posterior soft tissue impingement on teeth

M26.89

Other dentofacial anomalies

M26.9

Dentofacial anomaly, unspecified