ICD-10-CM Section · M26-M27
Dentofacial anomalies [including malocclusion] and other disorders of jaw
115 codes in this section
115
Total Codes
94
Billable
21
Header (Non-Billable)
2
Top-Level Codes
About Section M26-M27
Section M26-M27 (M26-M27) covers dentofacial anomalies [including malocclusion] and other disorders of jaw. It sits within the Diseases of the musculoskeletal system and connective tissue chapter (M00-M99). This section contains 115 ICD-10-CM codes, 94 billable diagnoses you can submit on a claim, and 21 non-billable header codes used to organize the hierarchy.
Codes are organized below by 3-character root. Click the root to see all subcodes underneath it, or click any individual code for full coverage data, payer policies, and linked CPT procedures.
Codes in M26-M27
Grouped by 3-character root code. Click any code for full detail.
M26
Dentofacial anomalies [including malocclusion]
94 subcodes
| M26.0 | Major anomalies of jaw size | Header |
| M26.00 | Unspecified anomaly of jaw size | Billable |
| M26.01 | Maxillary hyperplasia | Billable |
| M26.02 | Maxillary hypoplasia | Billable |
| M26.03 | Mandibular hyperplasia | Billable |
| M26.04 | Mandibular hypoplasia | Billable |
| M26.05 | Macrogenia | Billable |
| M26.06 | Microgenia | Billable |
| M26.07 | Excessive tuberosity of jaw | Billable |
| M26.09 | Other specified anomalies of jaw size | Billable |
| M26.1 | Anomalies of jaw-cranial base relationship | Header |
| M26.10 | Unspecified anomaly of jaw-cranial base relationship | Billable |
| M26.11 | Maxillary asymmetry | Billable |
| M26.12 | Other jaw asymmetry | Billable |
| M26.19 | Other specified anomalies of jaw-cranial base relationship | Billable |
| M26.2 | Anomalies of dental arch relationship | Header |
| M26.20 | Unspecified anomaly of dental arch relationship | Billable |
| M26.21 | Malocclusion, Angle's class | Header |
| M26.211 | Malocclusion, Angle's class I | Billable |
| M26.212 | Malocclusion, Angle's class II | Billable |
| M26.213 | Malocclusion, Angle's class III | Billable |
| M26.219 | Malocclusion, Angle's class, unspecified | Billable |
| M26.22 | Open occlusal relationship | Header |
| M26.220 | Open anterior occlusal relationship | Billable |
| M26.221 | Open posterior occlusal relationship | Billable |
| M26.23 | Excessive horizontal overlap | Billable |
| M26.24 | Reverse articulation | Billable |
| M26.25 | Anomalies of interarch distance | Billable |
| M26.29 | Other anomalies of dental arch relationship | Billable |
| M26.3 | Anomalies of tooth position of fully erupted tooth or teeth | Header |
| M26.30 | Unspecified anomaly of tooth position of fully erupted tooth or teeth | Billable |
| M26.31 | Crowding of fully erupted teeth | Billable |
| M26.32 | Excessive spacing of fully erupted teeth | Billable |
| M26.33 | Horizontal displacement of fully erupted tooth or teeth | Billable |
| M26.34 | Vertical displacement of fully erupted tooth or teeth | Billable |
| M26.35 | Rotation of fully erupted tooth or teeth | Billable |
| M26.36 | Insufficient interocclusal distance of fully erupted teeth (ridge) | Billable |
| M26.37 | Excessive interocclusal distance of fully erupted teeth | Billable |
| M26.39 | Other anomalies of tooth position of fully erupted tooth or teeth | Billable |
| M26.4 | Malocclusion, unspecified | Billable |
| M26.5 | Dentofacial functional abnormalities | Header |
| M26.50 | Dentofacial functional abnormalities, unspecified | Billable |
| M26.51 | Abnormal jaw closure | Billable |
| M26.52 | Limited mandibular range of motion | Billable |
| M26.53 | Deviation in opening and closing of the mandible | Billable |
| M26.54 | Insufficient anterior guidance | Billable |
| M26.55 | Centric occlusion maximum intercuspation discrepancy | Billable |
| M26.56 | Non-working side interference | Billable |
| M26.57 | Lack of posterior occlusal support | Billable |
| M26.59 | Other dentofacial functional abnormalities | Billable |
| M26.6 | Temporomandibular joint disorders | Header |
| M26.60 | Temporomandibular joint disorder, unspecified | Header |
| M26.601 | Right temporomandibular joint disorder, unspecified | Billable |
| M26.602 | Left temporomandibular joint disorder, unspecified | Billable |
| M26.603 | Bilateral temporomandibular joint disorder, unspecified | Billable |
| M26.609 | Unspecified temporomandibular joint disorder, unspecified side | Billable |
| M26.61 | Adhesions and ankylosis of temporomandibular joint | Header |
| M26.611 | Adhesions and ankylosis of right temporomandibular joint | Billable |
| M26.612 | Adhesions and ankylosis of left temporomandibular joint | Billable |
| M26.613 | Adhesions and ankylosis of bilateral temporomandibular joint | Billable |
| M26.619 | Adhesions and ankylosis of temporomandibular joint, unspecified side | Billable |
| M26.62 | Arthralgia of temporomandibular joint | Header |
| M26.621 | Arthralgia of right temporomandibular joint | Billable |
| M26.622 | Arthralgia of left temporomandibular joint | Billable |
| M26.623 | Arthralgia of bilateral temporomandibular joint | Billable |
| M26.629 | Arthralgia of temporomandibular joint, unspecified side | Billable |
| M26.63 | Articular disc disorder of temporomandibular joint | Header |
| M26.631 | Articular disc disorder of right temporomandibular joint | Billable |
| M26.632 | Articular disc disorder of left temporomandibular joint | Billable |
| M26.633 | Articular disc disorder of bilateral temporomandibular joint | Billable |
| M26.639 | Articular disc disorder of temporomandibular joint, unspecified side | Billable |
| M26.64 | Arthritis of temporomandibular joint | Header |
| M26.641 | Arthritis of right temporomandibular joint | Billable |
| M26.642 | Arthritis of left temporomandibular joint | Billable |
| M26.643 | Arthritis of bilateral temporomandibular joint | Billable |
| M26.649 | Arthritis of unspecified temporomandibular joint | Billable |
| M26.65 | Arthropathy of temporomandibular joint | Header |
| M26.651 | Arthropathy of right temporomandibular joint | Billable |
| M26.652 | Arthropathy of left temporomandibular joint | Billable |
| M26.653 | Arthropathy of bilateral temporomandibular joint | Billable |
| M26.659 | Arthropathy of unspecified temporomandibular joint | Billable |
| M26.69 | Other specified disorders of temporomandibular joint | Billable |
| M26.7 | Dental alveolar anomalies | Header |
| M26.70 | Unspecified alveolar anomaly | Billable |
| M26.71 | Alveolar maxillary hyperplasia | Billable |
| M26.72 | Alveolar mandibular hyperplasia | Billable |
| M26.73 | Alveolar maxillary hypoplasia | Billable |
| M26.74 | Alveolar mandibular hypoplasia | Billable |
| M26.79 | Other specified alveolar anomalies | Billable |
| M26.8 | Other dentofacial anomalies | Header |
| M26.81 | Anterior soft tissue impingement | Billable |
| M26.82 | Posterior soft tissue impingement | Billable |
| M26.89 | Other dentofacial anomalies | Billable |
| M26.9 | Dentofacial anomaly, unspecified | Billable |
M27
Other diseases of jaws
19 subcodes
| M27.0 | Developmental disorders of jaws | Billable |
| M27.1 | Giant cell granuloma, central | Billable |
| M27.2 | Inflammatory conditions of jaws | Billable |
| M27.3 | Alveolitis of jaws | Billable |
| M27.4 | Other and unspecified cysts of jaw | Header |
| M27.40 | Unspecified cyst of jaw | Billable |
| M27.49 | Other cysts of jaw | Billable |
| M27.5 | Periradicular pathology associated with previous endodontic treatment | Header |
| M27.51 | Perforation of root canal space due to endodontic treatment | Billable |
| M27.52 | Endodontic overfill | Billable |
| M27.53 | Endodontic underfill | Billable |
| M27.59 | Other periradicular pathology associated with previous endodontic treatment | Billable |
| M27.6 | Endosseous dental implant failure | Header |
| M27.61 | Osseointegration failure of dental implant | Billable |
| M27.62 | Post-osseointegration biological failure of dental implant | Billable |
| M27.63 | Post-osseointegration mechanical failure of dental implant | Billable |
| M27.69 | Other endosseous dental implant failure | Billable |
| M27.8 | Other specified diseases of jaws | Billable |
| M27.9 | Disease of jaws, unspecified | Billable |
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Verified against the CMS 2026 code set on May 31, 2026.
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