Version 2024

2024 ICD-10-CM Diagnosis Code M26

Dentofacial anomalies [including malocclusion]

ICD-10-CM Code:
M26
ICD-10 Code for:
Dentofacial anomalies [including malocclusion]
Is Billable?
Not Valid for Submission
Code Navigator:

Code Classification

  • 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 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of dentofacial anomalies [including malocclusion]. The code is not specific and is NOT valid for the year 2024 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

Specific Coding Applicable to Dentofacial anomalies [including malocclusion]

Non-specific codes like M26 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10-CM codes with a higher level of specificity when coding for dentofacial anomalies [including malocclusion]:

  • M26.0 for Major anomalies of jaw size - NON-BILLABLE CODE

  • Use M26.00 for Unspecified anomaly of jaw size - BILLABLE CODE

  • Use M26.01 for Maxillary hyperplasia - BILLABLE CODE

  • Use M26.02 for Maxillary hypoplasia - BILLABLE CODE

  • Use M26.03 for Mandibular hyperplasia - BILLABLE CODE

  • Use M26.04 for Mandibular hypoplasia - BILLABLE CODE

  • Use M26.05 for Macrogenia - BILLABLE CODE

  • Use M26.06 for Microgenia - BILLABLE CODE

  • Use M26.07 for Excessive tuberosity of jaw - BILLABLE CODE

  • Use M26.09 for Other specified anomalies of jaw size - BILLABLE CODE

  • M26.1 for Anomalies of jaw-cranial base relationship - NON-BILLABLE CODE

  • Use M26.10 for Unspecified anomaly of jaw-cranial base relationship - BILLABLE CODE

  • Use M26.11 for Maxillary asymmetry - BILLABLE CODE

  • Use M26.12 for Other jaw asymmetry - BILLABLE CODE

  • Use M26.19 for Other specified anomalies of jaw-cranial base relationship - BILLABLE CODE

  • M26.2 for Anomalies of dental arch relationship - NON-BILLABLE CODE

  • Use M26.20 for Unspecified anomaly of dental arch relationship - BILLABLE CODE

  • M26.21 for Malocclusion, Angle's class - NON-BILLABLE CODE

  • M26.22 for Open occlusal relationship - NON-BILLABLE CODE

  • Use M26.23 for Excessive horizontal overlap - BILLABLE CODE

  • Use M26.24 for Reverse articulation - BILLABLE CODE

  • Use M26.25 for Anomalies of interarch distance - BILLABLE CODE

  • Use M26.29 for Other anomalies of dental arch relationship - BILLABLE CODE

  • M26.3 for Anomalies of tooth position of fully erupted tooth or teeth - NON-BILLABLE CODE

  • Use M26.30 for Unspecified anomaly of tooth position of fully erupted tooth or teeth - BILLABLE CODE

  • Use M26.31 for Crowding of fully erupted teeth - BILLABLE CODE

  • Use M26.32 for Excessive spacing of fully erupted teeth - BILLABLE CODE

  • Use M26.33 for Horizontal displacement of fully erupted tooth or teeth - BILLABLE CODE

  • Use M26.34 for Vertical displacement of fully erupted tooth or teeth - BILLABLE CODE

  • Use M26.35 for Rotation of fully erupted tooth or teeth - BILLABLE CODE

  • Use M26.36 for Insufficient interocclusal distance of fully erupted teeth (ridge) - BILLABLE CODE

  • Use M26.37 for Excessive interocclusal distance of fully erupted teeth - BILLABLE CODE

  • Use M26.39 for Other anomalies of tooth position of fully erupted tooth or teeth - BILLABLE CODE

  • Use M26.4 for Malocclusion, unspecified - BILLABLE CODE

  • M26.5 for Dentofacial functional abnormalities - NON-BILLABLE CODE

  • Use M26.50 for Dentofacial functional abnormalities, unspecified - BILLABLE CODE

  • Use M26.51 for Abnormal jaw closure - BILLABLE CODE

  • Use M26.52 for Limited mandibular range of motion - BILLABLE CODE

  • Use M26.53 for Deviation in opening and closing of the mandible - BILLABLE CODE

  • Use M26.54 for Insufficient anterior guidance - BILLABLE CODE

  • Use M26.55 for Centric occlusion maximum intercuspation discrepancy - BILLABLE CODE

  • Use M26.56 for Non-working side interference - BILLABLE CODE

  • Use M26.57 for Lack of posterior occlusal support - BILLABLE CODE

  • Use M26.59 for Other dentofacial functional abnormalities - BILLABLE CODE

  • M26.6 for Temporomandibular joint disorders - NON-BILLABLE CODE

  • M26.60 for Temporomandibular joint disorder, unspecified - NON-BILLABLE CODE

  • M26.61 for Adhesions and ankylosis of temporomandibular joint - NON-BILLABLE CODE

  • M26.62 for Arthralgia of temporomandibular joint - NON-BILLABLE CODE

  • M26.63 for Articular disc disorder of temporomandibular joint - NON-BILLABLE CODE

  • M26.64 for Arthritis of temporomandibular joint - NON-BILLABLE CODE

  • M26.65 for Arthropathy of temporomandibular joint - NON-BILLABLE CODE

  • Use M26.69 for Other specified disorders of temporomandibular joint - BILLABLE CODE

  • M26.7 for Dental alveolar anomalies - NON-BILLABLE CODE

  • Use M26.70 for Unspecified alveolar anomaly - BILLABLE CODE

  • Use M26.71 for Alveolar maxillary hyperplasia - BILLABLE CODE

  • Use M26.72 for Alveolar mandibular hyperplasia - BILLABLE CODE

  • Use M26.73 for Alveolar maxillary hypoplasia - BILLABLE CODE

  • Use M26.74 for Alveolar mandibular hypoplasia - BILLABLE CODE

  • Use M26.79 for Other specified alveolar anomalies - BILLABLE CODE

  • M26.8 for Other dentofacial anomalies - NON-BILLABLE CODE

  • Use M26.81 for Anterior soft tissue impingement - BILLABLE CODE

  • Use M26.82 for Posterior soft tissue impingement - BILLABLE CODE

  • Use M26.89 for Other dentofacial anomalies - BILLABLE CODE

  • Use M26.9 for Dentofacial anomaly, unspecified - BILLABLE CODE

Patient Education


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.

Certain diseases also lead to facial disorders. For example, nerve diseases like trigeminal neuralgia or Bell's palsy sometimes cause facial pain, spasms and trouble with eye or facial movement. Birth defects can also affect the face. They can cause underdeveloped or unusually prominent facial features or a lack of facial expression. Cleft lip and palate are a common facial birth defect.


[Learn More in MedlinePlus]

Jaw Injuries and Disorders

Your jaw is a set of bones that holds your teeth. It consists of two main parts. The upper part is the maxilla. It doesn't move. The moveable lower part is called the mandible. You move it when you talk or chew. The two halves of the mandible meet at your chin. The joint where the mandible meets your skull is the temporomandibular joint.

Jaw problems include:

  • Fractures (broken bones)
  • Dislocations
  • Temporomandibular joint dysfunction
  • Osteonecrosis, which happens when your bones lose their blood supply
  • Cancers

Treatment of jaw problems depends on the cause.


[Learn More in MedlinePlus]

Tooth Disorders

What are teeth?

Your teeth are made of a hard, bonelike material. There are four parts:

  • Enamel, your tooth's hard surface
  • Dentin, the hard yellow part under the enamel
  • Cementum, the hard tissue that covers the root and keeps your teeth in place
  • Pulp, the soft connective tissue in the center of your tooth. It contains nerves and blood vessels.

You need your teeth for many activities that you may take for granted. These include eating, speaking and even smiling.

What are tooth disorders?

There are many different problems that can affect your teeth, including:

  • Tooth decay - damage to a tooth's surface, which can lead to cavities
  • Abscess - a pocket of pus, caused by a tooth infection
  • Impacted tooth - a tooth did not erupt (break through the gum) when it should have. It is usually wisdom teeth that are impacted, but it can sometimes happen to other teeth.
  • Misaligned teeth (malocclusion)
  • Tooth injuries such as broken or chipped teeth

What causes tooth disorders?

The causes of tooth disorders varies, depending on the problem. Sometimes the cause is not taking good care of your teeth. In other cases, you may have been born with the problem or the cause is an accident.

What are the symptoms of tooth disorders?

The symptoms can vary, depending on the problem. Some of the more common symptoms include:

  • Abnormal color or shape of the tooth
  • Tooth pain
  • Worn-down teeth

How are tooth disorders diagnosed?

Your dentist will ask about your symptoms, look at your teeth, and probe them with dental instruments. In some cases, you may need dental x-rays.

What are the treatments for tooth disorders?

The treatment will depend on the problem. Some common treatments are:

  • Fillings for cavities
  • Root canals for cavities or infections that affect the pulp (inside of the tooth)
  • Extractions (pulling teeth) for teeth that are impacted and causing problems or are too damaged to be fixed. You may also have a tooth or teeth pulled because of overcrowding in your mouth.

Can tooth disorders be prevented?

The main thing that you can do to prevent tooth disorders is to take good care of your teeth:

  • Brush your teeth twice a day with a fluoride toothpaste
  • Clean between your teeth every day with floss or another type of between-the-teeth cleaner
  • Limit sugary snacks and drinks
  • Don't smoke or chew tobacco
  • See your dentist or oral health professional regularly

[Learn More in MedlinePlus]

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.