Dentofacial anomalies [including malocclusion] and other disorders of jaw (M26-M27)

Browse all the diagnosis codes used for dentofacial anomalies [including malocclusion] and other disorders of jaw (m26-m27). For easy navigation, the diagnosis codes are sorted in alphabetical order and grouped by sections. Each section is clearly marked with its description, and the corresponding three-digit code range. This format makes it simple to browse diagnosis codes in this chapter or section and find what you're looking for. We've also added green checkmark icons to label billable codes, and red warning icons for non-billable ones. This makes it easy to identify which codes can be billed.

Instructional Notations

Type 1 Excludes

A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.

  • hemifacial atrophy or hypertrophy Q67.4
  • unilateral condylar hyperplasia or hypoplasia M27.8
  • Diseases of the musculoskeletal system and connective tissue (M00–M99)

    • Dentofacial anomalies [including malocclusion] and other disorders of jaw (M26-M27)

        • Dentofacial anomalies [including malocclusion] (M26)

        • M26 Dentofacial anomalies [including malocclusion]
        • 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
        • Other diseases of jaws (M27)

        • M27 Other diseases of jaws
        • M27.0 Developmental disorders of jaws
        • M27.1 Giant cell granuloma, central
        • M27.2 Inflammatory conditions of jaws
        • M27.3 Alveolitis of jaws
        • M27.4 Other and unspecified cysts of jaw
        • M27.40 Unspecified cyst of jaw
        • M27.49 Other cysts of jaw
        • M27.5 Periradicular pathology associated with previous endodontic treatment
        • M27.51 Perforation of root canal space due to endodontic treatment
        • M27.52 Endodontic overfill
        • M27.53 Endodontic underfill
        • M27.59 Other periradicular pathology associated with previous endodontic treatment
        • M27.6 Endosseous dental implant failure
        • M27.61 Osseointegration failure of dental implant
        • M27.62 Post-osseointegration biological failure of dental implant
        • M27.63 Post-osseointegration mechanical failure of dental implant
        • M27.69 Other endosseous dental implant failure
        • M27.8 Other specified diseases of jaws
        • M27.9 Disease of jaws, unspecified