ICD-10-CM · Chapter 13 · M00-M99
M26 Dentofacial anomalies [including malocclusion]
Subcodes
Subcodes are listed below for reference. Detail pages are not available for chapters 11–22.
| Code | Description | Billable |
|---|---|---|
| M26..0 | Major anomalies of jaw size | No |
| M26..00 | Unspecified anomaly of jaw size | Yes |
| M26..01 | Maxillary hyperplasia | Yes |
| M26..02 | Maxillary hypoplasia | Yes |
| M26..03 | Mandibular hyperplasia | Yes |
| M26..04 | Mandibular hypoplasia | Yes |
| M26..05 | Macrogenia | Yes |
| M26..06 | Microgenia | Yes |
| M26..07 | Excessive tuberosity of jaw | Yes |
| M26..09 | Other specified anomalies of jaw size | Yes |
| M26..1 | Anomalies of jaw-cranial base relationship | No |
| M26..10 | Unspecified anomaly of jaw-cranial base relationship | Yes |
| M26..11 | Maxillary asymmetry | Yes |
| M26..12 | Other jaw asymmetry | Yes |
| M26..19 | Other specified anomalies of jaw-cranial base relationship | Yes |
| M26..2 | Anomalies of dental arch relationship | No |
| M26..20 | Unspecified anomaly of dental arch relationship | Yes |
| M26..21 | Malocclusion, Angle's class | No |
| M26..211 | Malocclusion, Angle's class I | Yes |
| M26..212 | Malocclusion, Angle's class II | Yes |
| M26..213 | Malocclusion, Angle's class III | Yes |
| M26..219 | Malocclusion, Angle's class, unspecified | Yes |
| M26..22 | Open occlusal relationship | No |
| M26..220 | Open anterior occlusal relationship | Yes |
| M26..221 | Open posterior occlusal relationship | Yes |
| M26..23 | Excessive horizontal overlap | Yes |
| M26..24 | Reverse articulation | Yes |
| M26..25 | Anomalies of interarch distance | Yes |
| M26..29 | Other anomalies of dental arch relationship | Yes |
| M26..3 | Anomalies of tooth position of fully erupted tooth or teeth | No |
| M26..30 | Unspecified anomaly of tooth position of fully erupted tooth or teeth | Yes |
| M26..31 | Crowding of fully erupted teeth | Yes |
| M26..32 | Excessive spacing of fully erupted teeth | Yes |
| M26..33 | Horizontal displacement of fully erupted tooth or teeth | Yes |
| M26..34 | Vertical displacement of fully erupted tooth or teeth | Yes |
| M26..35 | Rotation of fully erupted tooth or teeth | Yes |
| M26..36 | Insufficient interocclusal distance of fully erupted teeth (ridge) | Yes |
| M26..37 | Excessive interocclusal distance of fully erupted teeth | Yes |
| M26..39 | Other anomalies of tooth position of fully erupted tooth or teeth | Yes |
| M26..4 | Malocclusion, unspecified | Yes |
| M26..5 | Dentofacial functional abnormalities | No |
| M26..50 | Dentofacial functional abnormalities, unspecified | Yes |
| M26..51 | Abnormal jaw closure | Yes |
| M26..52 | Limited mandibular range of motion | Yes |
| M26..53 | Deviation in opening and closing of the mandible | Yes |
| M26..54 | Insufficient anterior guidance | Yes |
| M26..55 | Centric occlusion maximum intercuspation discrepancy | Yes |
| M26..56 | Non-working side interference | Yes |
| M26..57 | Lack of posterior occlusal support | Yes |
| M26..59 | Other dentofacial functional abnormalities | Yes |
| M26..6 | Temporomandibular joint disorders | No |
| M26..60 | Temporomandibular joint disorder, unspecified | No |
| M26..601 | Right temporomandibular joint disorder, unspecified | Yes |
| M26..602 | Left temporomandibular joint disorder, unspecified | Yes |
| M26..603 | Bilateral temporomandibular joint disorder, unspecified | Yes |
| M26..609 | Unspecified temporomandibular joint disorder, unspecified side | Yes |
| M26..61 | Adhesions and ankylosis of temporomandibular joint | No |
| M26..611 | Adhesions and ankylosis of right temporomandibular joint | Yes |
| M26..612 | Adhesions and ankylosis of left temporomandibular joint | Yes |
| M26..613 | Adhesions and ankylosis of bilateral temporomandibular joint | Yes |
| M26..619 | Adhesions and ankylosis of temporomandibular joint, unspecified side | Yes |
| M26..62 | Arthralgia of temporomandibular joint | No |
| M26..621 | Arthralgia of right temporomandibular joint | Yes |
| M26..622 | Arthralgia of left temporomandibular joint | Yes |
| M26..623 | Arthralgia of bilateral temporomandibular joint | Yes |
| M26..629 | Arthralgia of temporomandibular joint, unspecified side | Yes |
| M26..63 | Articular disc disorder of temporomandibular joint | No |
| M26..631 | Articular disc disorder of right temporomandibular joint | Yes |
| M26..632 | Articular disc disorder of left temporomandibular joint | Yes |
| M26..633 | Articular disc disorder of bilateral temporomandibular joint | Yes |
| M26..639 | Articular disc disorder of temporomandibular joint, unspecified side | Yes |
| M26..64 | Arthritis of temporomandibular joint | No |
| M26..641 | Arthritis of right temporomandibular joint | Yes |
| M26..642 | Arthritis of left temporomandibular joint | Yes |
| M26..643 | Arthritis of bilateral temporomandibular joint | Yes |
| M26..649 | Arthritis of unspecified temporomandibular joint | Yes |
| M26..65 | Arthropathy of temporomandibular joint | No |
| M26..651 | Arthropathy of right temporomandibular joint | Yes |
| M26..652 | Arthropathy of left temporomandibular joint | Yes |
| M26..653 | Arthropathy of bilateral temporomandibular joint | Yes |
| M26..659 | Arthropathy of unspecified temporomandibular joint | Yes |
| M26..69 | Other specified disorders of temporomandibular joint | Yes |
| M26..7 | Dental alveolar anomalies | No |
| M26..70 | Unspecified alveolar anomaly | Yes |
| M26..71 | Alveolar maxillary hyperplasia | Yes |
| M26..72 | Alveolar mandibular hyperplasia | Yes |
| M26..73 | Alveolar maxillary hypoplasia | Yes |
| M26..74 | Alveolar mandibular hypoplasia | Yes |
| M26..79 | Other specified alveolar anomalies | Yes |
| M26..8 | Other dentofacial anomalies | No |
| M26..81 | Anterior soft tissue impingement | Yes |
| M26..82 | Posterior soft tissue impingement | Yes |
| M26..89 | Other dentofacial anomalies | Yes |
| M26..9 | Dentofacial anomaly, unspecified | Yes |
Last reviewed: September 2026