ICD-10-CM category
M26: Dentofacial anomalies [including malocclusion]
Codes under M26 (Dentofacial anomalies [including malocclusion]). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| M26.0 | Major anomalies of jaw size | — |
| M26.0 | Major anomalies of jaw size | — |
| M26.00 | Unspecified anomaly of jaw size | ✓ |
| M26.00 | Unspecified anomaly of jaw size | ✓ |
| M26.01 | Maxillary hyperplasia | ✓ |
| M26.01 | Maxillary hyperplasia | ✓ |
| M26.1 | Anomalies of jaw-cranial base relationship | — |
| M26.1 | Anomalies of jaw-cranial base relationship | — |
| M26.02 | Maxillary hypoplasia | ✓ |
| M26.02 | Maxillary hypoplasia | ✓ |
| M26.2 | Anomalies of dental arch relationship | — |
| M26.2 | Anomalies of dental arch relationship | — |
| M26.03 | Mandibular hyperplasia | ✓ |
| M26.03 | Mandibular hyperplasia | ✓ |
| M26.3 | Anomalies of tooth position of fully erupted tooth or teeth | — |
| M26.3 | Anomalies of tooth position of fully erupted tooth or teeth | — |
| M26.04 | Mandibular hypoplasia | ✓ |
| M26.04 | Mandibular hypoplasia | ✓ |
| M26.4 | Malocclusion, unspecified | ✓ |
| M26.4 | Malocclusion, unspecified | ✓ |
| M26.05 | Macrogenia | ✓ |
| M26.05 | Macrogenia | ✓ |
| M26.5 | Dentofacial functional abnormalities | — |
| M26.5 | Dentofacial functional abnormalities | — |
| M26.06 | Microgenia | ✓ |
| M26.06 | Microgenia | ✓ |
| M26.6 | Temporomandibular joint disorders | — |
| M26.6 | Temporomandibular joint disorders | — |
| M26.07 | Excessive tuberosity of jaw | ✓ |
| M26.07 | Excessive tuberosity of jaw | ✓ |
| M26.7 | Dental alveolar anomalies | — |
| M26.7 | Dental alveolar anomalies | — |
| M26.8 | Other dentofacial anomalies | — |
| M26.8 | Other dentofacial anomalies | — |
| M26.09 | Other specified anomalies of jaw size | ✓ |
| M26.09 | Other specified anomalies of jaw size | ✓ |
| M26.9 | Dentofacial anomaly, unspecified | ✓ |
| M26.9 | Dentofacial anomaly, unspecified | ✓ |
| M26.10 | Unspecified anomaly of jaw-cranial base relationship | ✓ |
| M26.10 | Unspecified anomaly of jaw-cranial base relationship | ✓ |
| M26.11 | Maxillary asymmetry | ✓ |
| M26.11 | Maxillary asymmetry | ✓ |
| M26.12 | Other jaw asymmetry | ✓ |
| M26.12 | Other jaw asymmetry | ✓ |
| M26.19 | Other specified anomalies of jaw-cranial base relationship | ✓ |
| M26.19 | Other specified anomalies of jaw-cranial base relationship | ✓ |
| M26.20 | Unspecified anomaly of dental arch relationship | ✓ |
| M26.20 | Unspecified anomaly of dental arch relationship | ✓ |
| M26.21 | Malocclusion, Angle's class | — |
| M26.21 | Malocclusion, Angle's class | — |
| M26.22 | Open occlusal relationship | — |
| M26.22 | Open occlusal relationship | — |
| M26.23 | Excessive horizontal overlap | ✓ |
| M26.23 | Excessive horizontal overlap | ✓ |
| M26.24 | Reverse articulation | ✓ |
| M26.24 | Reverse articulation | ✓ |
| M26.25 | Anomalies of interarch distance | ✓ |
| M26.25 | Anomalies of interarch distance | ✓ |
| M26.29 | Other anomalies of dental arch relationship | ✓ |
| M26.29 | Other anomalies of dental arch relationship | ✓ |
| M26.30 | Unspecified anomaly 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 | ✓ |
| M26.31 | Crowding of fully erupted teeth | ✓ |
| M26.32 | Excessive spacing of fully erupted teeth | ✓ |
| M26.32 | Excessive spacing of fully erupted teeth | ✓ |
| M26.33 | Horizontal displacement of fully erupted tooth or teeth | ✓ |
| M26.33 | Horizontal displacement of fully erupted tooth or teeth | ✓ |
| M26.34 | Vertical 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 | ✓ |
| M26.35 | Rotation of fully erupted tooth or teeth | ✓ |
| M26.36 | Insufficient interocclusal distance of fully erupted teeth (ridge) | ✓ |
| M26.36 | Insufficient interocclusal distance of fully erupted teeth (ridge) | ✓ |
| M26.37 | Excessive interocclusal distance of fully erupted teeth | ✓ |
| M26.37 | Excessive interocclusal distance of fully erupted teeth | ✓ |
| M26.39 | Other anomalies of tooth position of fully erupted tooth or teeth | ✓ |
| M26.39 | Other anomalies of tooth position of fully erupted tooth or teeth | ✓ |
| M26.50 | Dentofacial functional abnormalities, unspecified | ✓ |
| M26.50 | Dentofacial functional abnormalities, unspecified | ✓ |
| M26.51 | Abnormal jaw closure | ✓ |
| M26.51 | Abnormal jaw closure | ✓ |
| M26.52 | Limited mandibular range of motion | ✓ |
| M26.52 | Limited mandibular range of motion | ✓ |
| M26.53 | Deviation in opening and closing of the mandible | ✓ |
| M26.53 | Deviation in opening and closing of the mandible | ✓ |
| M26.54 | Insufficient anterior guidance | ✓ |
| M26.54 | Insufficient anterior guidance | ✓ |
| M26.55 | Centric occlusion maximum intercuspation discrepancy | ✓ |
| M26.55 | Centric occlusion maximum intercuspation discrepancy | ✓ |
| M26.56 | Non-working side interference | ✓ |
| M26.56 | Non-working side interference | ✓ |
| M26.57 | Lack of posterior occlusal support | ✓ |
| M26.57 | Lack of posterior occlusal support | ✓ |
| M26.59 | Other dentofacial functional abnormalities | ✓ |
| M26.59 | Other dentofacial functional abnormalities | ✓ |
| M26.60 | Temporomandibular joint disorder, unspecified | — |
| M26.60 | Temporomandibular joint disorder, unspecified | — |
| M26.61 | Adhesions and ankylosis of temporomandibular joint | — |
| M26.61 | Adhesions and ankylosis of temporomandibular joint | — |
| M26.62 | Arthralgia of temporomandibular joint | — |
| M26.62 | Arthralgia of temporomandibular joint | — |
| M26.63 | Articular disc disorder of temporomandibular joint | — |
| M26.63 | Articular disc disorder of temporomandibular joint | — |
| M26.64 | Arthritis of temporomandibular joint | — |
| M26.64 | Arthritis of temporomandibular joint | — |
| M26.65 | Arthropathy of temporomandibular joint | — |
| M26.65 | Arthropathy of temporomandibular joint | — |
| M26.69 | Other specified disorders of temporomandibular joint | ✓ |
| M26.69 | Other specified disorders of temporomandibular joint | ✓ |
| M26.70 | Unspecified alveolar anomaly | ✓ |
| M26.70 | Unspecified alveolar anomaly | ✓ |
| M26.71 | Alveolar maxillary hyperplasia | ✓ |
| M26.71 | Alveolar maxillary hyperplasia | ✓ |
| M26.72 | Alveolar mandibular hyperplasia | ✓ |
| M26.72 | Alveolar mandibular hyperplasia | ✓ |
| M26.73 | Alveolar maxillary hypoplasia | ✓ |
| M26.73 | Alveolar maxillary hypoplasia | ✓ |
| M26.74 | Alveolar mandibular hypoplasia | ✓ |
| M26.74 | Alveolar mandibular hypoplasia | ✓ |
| M26.79 | Other specified alveolar anomalies | ✓ |
| M26.79 | Other specified alveolar anomalies | ✓ |
| M26.81 | Anterior soft tissue impingement | ✓ |
| M26.81 | Anterior soft tissue impingement | ✓ |
| M26.82 | Posterior soft tissue impingement | ✓ |
| M26.82 | Posterior soft tissue impingement | ✓ |
| M26.89 | Other dentofacial anomalies | ✓ |
| M26.89 | Other dentofacial anomalies | ✓ |
| M26.211 | Malocclusion, Angle's class I | ✓ |
| M26.211 | Malocclusion, Angle's class I | ✓ |
| M26.212 | Malocclusion, Angle's class II | ✓ |
| M26.212 | Malocclusion, Angle's class II | ✓ |
| M26.213 | Malocclusion, Angle's class III | ✓ |
| M26.213 | Malocclusion, Angle's class III | ✓ |
| M26.219 | Malocclusion, Angle's class, unspecified | ✓ |
| M26.219 | Malocclusion, Angle's class, unspecified | ✓ |
| M26.220 | Open anterior occlusal relationship | ✓ |
| M26.220 | Open anterior occlusal relationship | ✓ |
| M26.221 | Open posterior occlusal relationship | ✓ |
| M26.221 | Open posterior occlusal relationship | ✓ |
| M26.601 | Right temporomandibular joint disorder, unspecified | ✓ |
| M26.601 | Right temporomandibular joint disorder, unspecified | ✓ |
| M26.602 | Left temporomandibular joint disorder, unspecified | ✓ |
| M26.602 | Left temporomandibular joint disorder, unspecified | ✓ |
| M26.603 | Bilateral temporomandibular joint disorder, unspecified | ✓ |
| M26.603 | Bilateral temporomandibular joint disorder, unspecified | ✓ |
| M26.609 | Unspecified temporomandibular joint disorder, unspecified side | ✓ |
| M26.609 | Unspecified temporomandibular joint disorder, unspecified side | ✓ |
| M26.611 | Adhesions and ankylosis of right temporomandibular joint | ✓ |
| M26.611 | Adhesions and ankylosis of right temporomandibular joint | ✓ |
| M26.612 | Adhesions and ankylosis of left temporomandibular joint | ✓ |
| M26.612 | Adhesions and ankylosis of left temporomandibular joint | ✓ |
| M26.613 | Adhesions and ankylosis of bilateral temporomandibular joint | ✓ |
| M26.613 | Adhesions and ankylosis of bilateral temporomandibular joint | ✓ |
| M26.619 | Adhesions and ankylosis of temporomandibular joint, unspecified side | ✓ |
| M26.619 | Adhesions and ankylosis of temporomandibular joint, unspecified side | ✓ |
| M26.621 | Arthralgia of right temporomandibular joint | ✓ |
| M26.621 | Arthralgia of right temporomandibular joint | ✓ |
| M26.622 | Arthralgia of left temporomandibular joint | ✓ |
| M26.622 | Arthralgia of left temporomandibular joint | ✓ |
| M26.623 | Arthralgia of bilateral temporomandibular joint | ✓ |
| M26.623 | Arthralgia of bilateral temporomandibular joint | ✓ |
| M26.629 | Arthralgia of temporomandibular joint, unspecified side | ✓ |
| M26.629 | Arthralgia of temporomandibular joint, unspecified side | ✓ |
| M26.631 | Articular disc disorder of right temporomandibular joint | ✓ |
| M26.631 | Articular disc disorder of right temporomandibular joint | ✓ |
| M26.632 | Articular disc disorder of left temporomandibular joint | ✓ |
| M26.632 | Articular disc disorder of left temporomandibular joint | ✓ |
| M26.633 | Articular disc disorder of bilateral temporomandibular joint | ✓ |
| M26.633 | Articular disc disorder of bilateral temporomandibular joint | ✓ |
| M26.639 | Articular disc disorder of temporomandibular joint, unspecified side | ✓ |
| M26.639 | Articular disc disorder of temporomandibular joint, unspecified side | ✓ |
| M26.641 | Arthritis of right temporomandibular joint | ✓ |
| M26.641 | Arthritis of right temporomandibular joint | ✓ |
| M26.642 | Arthritis of left temporomandibular joint | ✓ |
| M26.642 | Arthritis of left temporomandibular joint | ✓ |
| M26.643 | Arthritis of bilateral temporomandibular joint | ✓ |
| M26.643 | Arthritis of bilateral temporomandibular joint | ✓ |
| M26.649 | Arthritis of unspecified temporomandibular joint | ✓ |
| M26.649 | Arthritis of unspecified temporomandibular joint | ✓ |
| M26.651 | Arthropathy of right temporomandibular joint | ✓ |
| M26.651 | Arthropathy of right temporomandibular joint | ✓ |
| M26.652 | Arthropathy of left temporomandibular joint | ✓ |
| M26.652 | Arthropathy of left temporomandibular joint | ✓ |
| M26.653 | Arthropathy of bilateral temporomandibular joint | ✓ |
| M26.653 | Arthropathy of bilateral temporomandibular joint | ✓ |
| M26.659 | Arthropathy of unspecified temporomandibular joint | ✓ |
| M26.659 | Arthropathy of unspecified temporomandibular joint | ✓ |
Frequently asked questions
What is ICD-10-CM code M26?
M26 is an ICD-10-CM category covering Dentofacial anomalies [including malocclusion]. It contains 188 more specific diagnosis codes, 156 of which are billable.
Is M26 a billable code?
No — M26 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example M26.0 — Major anomalies of jaw size). 156 of the 188 codes under M26 are billable.
What codes fall under M26?
M26 includes M26.0, M26.0, M26.00, M26.00, M26.01, plus 183 more. See the full list with descriptions and billable status above.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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