Dentofacial anomalies [including malocclusion] and other disorders of jaw (M26-M27)
chapter 13: Diseases of the Musculoskeletal System and Connective Tissue
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Instructional notes
Official coding guidelines
From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.
Covers site and laterality, acute injury versus chronic musculoskeletal conditions, 7th characters for pathologic fractures, osteoporosis with or without current fracture, and multisystem inflammatory syndrome.
- Site and laterality (page 60)
- Acute traumatic versus chronic or recurrent musculoskeletal conditions (page 61)
- Coding of Pathologic Fractures (page 61)
- Osteoporosis (page 61)
- Multisystem Inflammatory Syndrome (page 62)
All codes under M26-M27
M26-M27 can't be used on a claim. Pick a billable code below; grey headings group them.
- M26Dentofacial anomalies [including malocclusion]
- M26.0Major anomalies of jaw size
- M26.00Unspecified anomaly of jaw size
- M26.01Maxillary hyperplasia
- M26.02Maxillary hypoplasia
- M26.03Mandibular hyperplasia
- M26.04Mandibular hypoplasia
- M26.05Macrogenia
- M26.06Microgenia
- M26.07Excessive tuberosity of jaw
- M26.09Other specified anomalies of jaw size
- M26.1Anomalies of jaw-cranial base relationship
- M26.10Unspecified anomaly of jaw-cranial base relationship
- M26.11Maxillary asymmetry
- M26.12Other jaw asymmetry
- M26.19Other specified anomalies of jaw-cranial base relationship
- M26.2Anomalies of dental arch relationship
- M26.20Unspecified anomaly of dental arch relationship
- M26.21Malocclusion, Angle's class
- M26.211Malocclusion, Angle's class I
- M26.212Malocclusion, Angle's class II
- M26.213Malocclusion, Angle's class III
- M26.219Malocclusion, Angle's class, unspecified
- M26.22Open occlusal relationship
- M26.220Open anterior occlusal relationship
- M26.221Open posterior occlusal relationship
- M26.23Excessive horizontal overlap
- M26.24Reverse articulation
- M26.25Anomalies of interarch distance
- M26.29Other anomalies of dental arch relationship
- M26.3Anomalies of tooth position of fully erupted tooth or teeth
- M26.30Unspecified anomaly of tooth position of fully erupted tooth or teeth
- M26.31Crowding of fully erupted teeth
- M26.32Excessive spacing of fully erupted teeth
- M26.33Horizontal displacement of fully erupted tooth or teeth
- M26.34Vertical displacement of fully erupted tooth or teeth
- M26.35Rotation of fully erupted tooth or teeth
- M26.36Insufficient interocclusal distance of fully erupted teeth (ridge)
- M26.37Excessive interocclusal distance of fully erupted teeth
- M26.39Other anomalies of tooth position of fully erupted tooth or teeth
- M26.4Malocclusion, unspecified
- M26.5Dentofacial functional abnormalities
- M26.50Dentofacial functional abnormalities, unspecified
- M26.51Abnormal jaw closure
- M26.52Limited mandibular range of motion
- M26.53Deviation in opening and closing of the mandible
- M26.54Insufficient anterior guidance
- M26.55Centric occlusion maximum intercuspation discrepancy
- M26.56Non-working side interference
- M26.57Lack of posterior occlusal support
- M26.59Other dentofacial functional abnormalities
- M26.6Temporomandibular joint disorders
- M26.60Temporomandibular joint disorder, unspecified
- M26.601Right temporomandibular joint disorder, unspecified
- M26.602Left temporomandibular joint disorder, unspecified
- M26.603Bilateral temporomandibular joint disorder, unspecified
- M26.609Unspecified temporomandibular joint disorder, unspecified side
- M26.61Adhesions and ankylosis of temporomandibular joint
- M26.611Adhesions and ankylosis of right temporomandibular joint
- M26.612Adhesions and ankylosis of left temporomandibular joint
- M26.613Adhesions and ankylosis of bilateral temporomandibular joint
- M26.619Adhesions and ankylosis of temporomandibular joint, unspecified side
- M26.62Arthralgia of temporomandibular joint
- M26.621Arthralgia of right temporomandibular joint
- M26.622Arthralgia of left temporomandibular joint
- M26.623Arthralgia of bilateral temporomandibular joint
- M26.629Arthralgia of temporomandibular joint, unspecified side
- M26.63Articular disc disorder of temporomandibular joint
- M26.631Articular disc disorder of right temporomandibular joint
- M26.632Articular disc disorder of left temporomandibular joint
- M26.633Articular disc disorder of bilateral temporomandibular joint
- M26.639Articular disc disorder of temporomandibular joint, unspecified side
- M26.64Arthritis of temporomandibular joint
- M26.641Arthritis of right temporomandibular joint
- M26.642Arthritis of left temporomandibular joint
- M26.643Arthritis of bilateral temporomandibular joint
- M26.649Arthritis of unspecified temporomandibular joint
- M26.65Arthropathy of temporomandibular joint
- M26.651Arthropathy of right temporomandibular joint
- M26.652Arthropathy of left temporomandibular joint
- M26.653Arthropathy of bilateral temporomandibular joint
- M26.659Arthropathy of unspecified temporomandibular joint
- M26.69Other specified disorders of temporomandibular joint
- M26.7Dental alveolar anomalies
- M26.70Unspecified alveolar anomaly
- M26.71Alveolar maxillary hyperplasia
- M26.72Alveolar mandibular hyperplasia
- M26.73Alveolar maxillary hypoplasia
- M26.74Alveolar mandibular hypoplasia
- M26.79Other specified alveolar anomalies
- M26.8Other dentofacial anomalies
- M26.81Anterior soft tissue impingement
- M26.82Posterior soft tissue impingement
- M26.89Other dentofacial anomalies
- M26.9Dentofacial anomaly, unspecified
- M27Other diseases of jaws
- M27.0Developmental disorders of jaws
- M27.1Giant cell granuloma, central
- M27.2Inflammatory conditions of jaws
- M27.3Alveolitis of jaws
- M27.4Other and unspecified cysts of jaw
- M27.40Unspecified cyst of jaw
- M27.49Other cysts of jaw
- M27.5Periradicular pathology associated with previous endodontic treatment
- M27.51Perforation of root canal space due to endodontic treatment
- M27.52Endodontic overfill
- M27.53Endodontic underfill
- M27.59Other periradicular pathology associated with previous endodontic treatment
- M27.6Endosseous dental implant failure
- M27.61Osseointegration failure of dental implant
- M27.62Post-osseointegration biological failure of dental implant
- M27.63Post-osseointegration mechanical failure of dental implant
- M27.69Other endosseous dental implant failure
- M27.8Other specified diseases of jaws
- M27.9Disease of jaws, unspecified
M26-M27 MS-DRGs
This code does not group to an MS-DRG as a principal diagnosis.
About the condition
Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.
Facial Injuries and Disorders
Face injuries and disorders can cause pain and affect how you look. In severe cases, they can affect sight, speech, breathing and your ability to swallow. Fractures (broken bones), especially in the bones of your nose, cheekbone and jaw, are common facial injuries.
Read more about facial injuries and disorders on MedlinePlusJaw Injuries and Disorders
Your jaw is a set of bones that holds your teeth. It includes: Jaw problems can include:
Read more about jaw injuries and disorders on MedlinePlus