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    v1.0.28
    OpenPayerBilling CodesDentofacial anomalies [including malocclusion] and other disorders of jawICD-10-CM m26-dentofacial-anomalies-including-malocclusion
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    ICD-10-CM Code For Dentofacial Anomalies Including Malocclusion: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group M26 includes dentofacial anomalies such as malocclusion, mandibular and maxillary growth disturbances, and other disorders of the jaw that affect dental occlusion and facial structure. These ICD-10-CM diagnosis codes are used to document clinical scenarios involving jaw deformities, occlusal abnormalities, and related structural problems, capturing severity and anatomic involvement relevant to treatment planning. Accurate coding within the ICD-10-CM M26 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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    ICD-10-CM M26: Dentofacial Anomalies [Including Malocclusion] Overview

    The ICD-10-CM M26 group covers congenital and acquired dentofacial anomalies affecting the jaws, dental arch relationships, and occlusion. These conditions involve the maxillofacial structures and dental occlusion, often requiring orthodontic or surgical management. Accurate coding ensures complete clinical documentation and supports appropriate reimbursement for procedures addressing jaw and occlusal disorders.

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    When to Use

    Use a code from this group when documenting a patient with a clinically diagnosed dentofacial anomaly, malocclusion, or jaw disorder that affects occlusion or facial structure. These codes apply when the diagnosis informs treatment planning for orthodontic, surgical, or multidisciplinary management.

    ICD-10-CM Codes

    78 rows

    ICD-10-CM CodeDescription
    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
    M26.10Unspecified anomaly of jaw-cranial base relationship
    M26.11Maxillary asymmetry
    M26.12Other jaw asymmetry
    M26.19Other specified anomalies of jaw-cranial base relationship
    M26.20Unspecified anomaly of dental arch relationship
    M26.211Malocclusion, Angle's class I
    M26.212Malocclusion, Angle's class II
    M26.213Malocclusion, Angle's class III
    M26.219Malocclusion, Angle's class, unspecified
    M26.220Open anterior occlusal relationship
    M26.221Open posterior occlusal relationship

    Showing 1–20 of 78

    DRG Codes

    6 rows

    DRG CodeDescription
    011Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with MCC
    012Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with CC
    013Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy without CC/MCC
    157Dental and Oral Diseases with MCC
    158Dental and Oral Diseases with CC
    159Dental and Oral Diseases without CC/MCC

    Related Codes

    M27-OTHER-DISEASES-OF-JAWS

    ICD-10-CM Code For Other Diseases Of Jaws: Group Overview

    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
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