Excludes1

  • hemifacial atrophy or hypertrophy (Q67.4)
  • unilateral condylar hyperplasia or hypoplasia (M27.8)
  1. M26 Dentofacial anomalies [including malocclusion]

    1. M26.0 Major anomalies of jaw size

      1. M26.00 Unspecified anomaly of jaw size

      2. M26.01 Maxillary hyperplasia

      3. M26.02 Maxillary hypoplasia

      4. M26.03 Mandibular hyperplasia

      5. M26.04 Mandibular hypoplasia

      6. M26.05 Macrogenia

      7. M26.06 Microgenia

      8. M26.07 Excessive tuberosity of jaw

        Inclusion term(s):

        • Entire maxillary tuberosity
      9. M26.09 Other specified anomalies of jaw size

    2. M26.1 Anomalies of jaw-cranial base relationship

      1. M26.10 Unspecified anomaly of jaw-cranial base relationship

      2. M26.11 Maxillary asymmetry

      3. M26.12 Other jaw asymmetry

      4. M26.19 Other specified anomalies of jaw-cranial base relationship

    3. M26.2 Anomalies of dental arch relationship

      1. M26.20 Unspecified anomaly of dental arch relationship

      2. M26.21 Malocclusion, Angle's class

      3. M26.22 Open occlusal relationship

      4. M26.23 Excessive horizontal overlap

        Inclusion term(s):

        • Excessive horizontal overjet
      5. M26.24 Reverse articulation

        Inclusion term(s):

        • Crossbite (anterior) (posterior)
      6. M26.25 Anomalies of interarch distance

      7. M26.29 Other anomalies of dental arch relationship

        Inclusion term(s):

        • Midline deviation of dental arch
        • Overbite (excessive) deep
        • Overbite (excessive) horizontal
        • Overbite (excessive) vertical
        • Posterior lingual occlusion of mandibular teeth
    4. M26.3 Anomalies of tooth position of fully erupted tooth or teeth

      1. M26.30 Unspecified anomaly of tooth position of fully erupted tooth or teeth

        Inclusion term(s):

        • 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
      2. M26.31 Crowding of fully erupted teeth

      3. M26.32 Excessive spacing of fully erupted teeth

        Inclusion term(s):

        • Diastema of fully erupted tooth or teeth NOS
      4. M26.33 Horizontal displacement of fully erupted tooth or teeth

        Inclusion term(s):

        • Tipped tooth or teeth
        • Tipping of fully erupted tooth
      5. M26.34 Vertical displacement of fully erupted tooth or teeth

        Inclusion term(s):

        • Extruded tooth
        • Infraeruption of tooth or teeth
        • Supraeruption of tooth or teeth
      6. M26.35 Rotation of fully erupted tooth or teeth

      7. M26.36 Insufficient interocclusal distance of fully erupted teeth (ridge)

        Inclusion term(s):

        • Lack of adequate intermaxillary vertical dimension of fully erupted teeth
      8. M26.37 Excessive interocclusal distance of fully erupted teeth

        Inclusion term(s):

        • Excessive intermaxillary vertical dimension of fully erupted teeth
        • Loss of occlusal vertical dimension of fully erupted teeth
      9. M26.39 Other anomalies of tooth position of fully erupted tooth or teeth

    5. M26.4 Malocclusion, unspecified

    6. M26.5 Dentofacial functional abnormalities

      1. M26.50 Dentofacial functional abnormalities, unspecified

      2. M26.51 Abnormal jaw closure

      3. M26.52 Limited mandibular range of motion

      4. M26.53 Deviation in opening and closing of the mandible

      5. M26.54 Insufficient anterior guidance

        Inclusion term(s):

        • Insufficient anterior occlusal guidance
      6. M26.55 Centric occlusion maximum intercuspation discrepancy

      7. M26.56 Non-working side interference

        Inclusion term(s):

        • Balancing side interference
      8. M26.57 Lack of posterior occlusal support

      9. M26.59 Other dentofacial functional abnormalities

        Inclusion term(s):

        • Centric occlusion (of teeth) NOS
        • Malocclusion due to abnormal swallowing
        • Malocclusion due to mouth breathing
        • Malocclusion due to tongue, lip or finger habits
    7. M26.6 Temporomandibular joint disorders

      1. 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

          Inclusion term(s):

          • Temporomandibular joint disorder NOS
      2. 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
      3. 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
      4. 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
      5. 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
      6. 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
      7. M26.69 Other specified disorders of temporomandibular joint

    8. M26.7 Dental alveolar anomalies

      1. M26.70 Unspecified alveolar anomaly

      2. M26.71 Alveolar maxillary hyperplasia

      3. M26.72 Alveolar mandibular hyperplasia

      4. M26.73 Alveolar maxillary hypoplasia

      5. M26.74 Alveolar mandibular hypoplasia

      6. M26.79 Other specified alveolar anomalies

    9. M26.8 Other dentofacial anomalies

      1. M26.81 Anterior soft tissue impingement

        Inclusion term(s):

        • Anterior soft tissue impingement on teeth
      2. M26.82 Posterior soft tissue impingement

        Inclusion term(s):

        • Posterior soft tissue impingement on teeth
      3. M26.89 Other dentofacial anomalies

    10. M26.9 Dentofacial anomaly, unspecified

Abbreviations used here:

NEC Not elsewhere classifiable
This abbreviation in the Tabular List represents “other specified”. When a specific code is not available for a condition, the Tabular List includes an NEC entry under a code to identify the code as the “other specified” code.

NOS Not otherwise specified
This abbreviation is the equivalent of unspecified.