2020 ICD-10-CM Diagnosis Code M26

Dentofacial anomalies [including malocclusion]

    2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
  • M26 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2020 edition of ICD-10-CM M26 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of M26 - other international versions of ICD-10 M26 may differ.
The following code(s) above M26 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to M26:
  • M00-M99
    2020 ICD-10-CM Range M00-M99

    Diseases of the musculoskeletal system and connective tissue

    Note
    • Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition
    Type 2 Excludes
    • arthropathic psoriasis (L40.5-)
    • certain conditions originating in the perinatal period (P04-P96)
    • certain infectious and parasitic diseases (A00-B99)
    • compartment syndrome (traumatic) (T79.A-)
    • complications of pregnancy, childbirth and the puerperium (O00-O9A)
    • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
    • endocrine, nutritional and metabolic diseases (E00-E88)
    • injury, poisoning and certain other consequences of external causes (S00-T88)
    • neoplasms (C00-D49)
    • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
    Diseases of the musculoskeletal system and connective tissue
  • M26-M27
    2020 ICD-10-CM Range M26-M27

    Dentofacial anomalies [including malocclusion] and other disorders of jaw

    Type 1 Excludes
    • hemifacial atrophy or hypertrophy (Q67.4)
    • unilateral condylar hyperplasia or hypoplasia (M27.8)
    Dentofacial anomalies [including malocclusion] and other disorders of jaw
Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
Code annotations containing back-references to M26:
  • Type 1 Excludes: Q18
    , Q38
    , Q67.4
    , Q75
    ICD-10-CM Diagnosis Code Q18

    Other congenital malformations of face and neck

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • cleft lip and cleft palate (Q35-Q37)
    • conditions classified to Q67.0-Q67.4
    • congenital malformations of skull and face bones (Q75.-)
    • cyclopia (Q87.0)
    • dentofacial anomalies [including malocclusion] (M26.-)
    • malformation syndromes affecting facial appearance (Q87.0)
    • persistent thyroglossal duct (Q89.2)
    ICD-10-CM Diagnosis Code Q38

    Other congenital malformations of tongue, mouth and pharynx

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 1 Excludes
    ICD-10-CM Diagnosis Code Q67.4

    Other congenital deformities of skull, face and jaw

      2016 2017 2018 2019 2020 Billable/Specific Code POA Exempt
    Applicable To
    • Congenital depressions in skull
    • Congenital hemifacial atrophy or hypertrophy
    • Deviation of nasal septum, congenital
    • Squashed or bent nose, congenital
    Type 1 Excludes
    • dentofacial anomalies [including malocclusion] (M26.-)
    • syphilitic saddle nose (A50.5)
    ICD-10-CM Diagnosis Code Q75

    Other congenital malformations of skull and face bones

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • congenital malformation of face NOS (Q18.-)
    • congenital malformation syndromes classified to Q87.-
    • dentofacial anomalies [including malocclusion] (M26.-)
    • musculoskeletal deformities of head and face (Q67.0-Q67.4)
    • skull defects associated with congenital anomalies of brain such as:
    • anencephaly (Q00.0)
    • encephalocele (Q01.-)
    • hydrocephalus (Q03.-)
    • microcephaly (Q02)
  • Type 2 Excludes: K08
    , M95
    ICD-10-CM Diagnosis Code K08

    Other disorders of teeth and supporting structures

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 2 Excludes
    • dentofacial anomalies [including malocclusion] (M26.-)
    • disorders of jaw (M27.-)
    ICD-10-CM Diagnosis Code M95

    Other acquired deformities of musculoskeletal system and connective tissue

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 2 Excludes
    • acquired absence of limbs and organs (Z89-Z90)
    • acquired deformities of limbs (M20-M21)
    • congenital malformations and deformations of the musculoskeletal system (Q65-Q79)
    • deforming dorsopathies (M40-M43)
    • dentofacial anomalies [including malocclusion] (M26.-)
    • postprocedural musculoskeletal disorders (M96.-)
ICD-10-CM Codes Adjacent To M26
M25.859 Other specified joint disorders, unspecified hip
M25.86 Other specified joint disorders, knee
M25.861 Other specified joint disorders, right knee
M25.862 Other specified joint disorders, left knee
M25.869 Other specified joint disorders, unspecified knee
M25.87 Other specified joint disorders, ankle and foot
M25.871 Other specified joint disorders, right ankle and foot
M25.872 Other specified joint disorders, left ankle and foot
M25.879 Other specified joint disorders, unspecified ankle and foot
M25.9 Joint disorder, unspecified
M26 Dentofacial anomalies [including malocclusion]
M26.0 Major anomalies of jaw size
M26.00 Unspecified anomaly of jaw size
M26.01 Maxillary hyperplasia
M26.02 Maxillary hypoplasia
M26.03 Mandibular hyperplasia
M26.04 Mandibular hypoplasia
M26.05 Macrogenia
M26.06 Microgenia
M26.07 Excessive tuberosity of jaw
M26.09 Other specified anomalies of jaw size

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.