2020 ICD-10-CM Diagnosis Code M26.5

Dentofacial functional abnormalities

    2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
  • M26.5 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 M26.5 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of M26.5 - other international versions of ICD-10 M26.5 may differ.
Type 1 Excludes
Type 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as M26.5. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • bruxism (
    ICD-10-CM Diagnosis Code F45.8

    Other somatoform disorders

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Psychogenic dysmenorrhea
    • Psychogenic dysphagia, including 'globus hystericus'
    • Psychogenic pruritus
    • Psychogenic torticollis
    • Somatoform autonomic dysfunction
    • Teeth grinding
    Type 1 Excludes
    • sleep related teeth grinding (G47.63)
    F45.8
    )
  • teeth-grinding NOS (
    ICD-10-CM Diagnosis Code F45.8

    Other somatoform disorders

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Psychogenic dysmenorrhea
    • Psychogenic dysphagia, including 'globus hystericus'
    • Psychogenic pruritus
    • Psychogenic torticollis
    • Somatoform autonomic dysfunction
    • Teeth grinding
    Type 1 Excludes
    • sleep related teeth grinding (G47.63)
    F45.8
    )
The following code(s) above M26.5 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 M26.5:
  • 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

Diagnosis Index entries containing back-references to M26.5:
  • Breathing
    • mouth R06.5
      ICD-10-CM Diagnosis Code R06.5

      Mouth breathing

        2016 2017 2018 2019 2020 Billable/Specific Code
      Type 2 Excludes
      • causing malocclusion M26.5

ICD-10-CM Codes Adjacent To M26.5
M26.30 Unspecified anomaly of tooth position of fully erupted tooth or teeth
M26.31 Crowding of fully erupted teeth
M26.32 Excessive spacing of fully erupted teeth
M26.33 Horizontal displacement of fully erupted tooth or teeth
M26.34 Vertical displacement of fully erupted tooth or teeth
M26.35 Rotation of fully erupted tooth or teeth
M26.36 Insufficient interocclusal distance of fully erupted teeth (ridge)
M26.37 Excessive interocclusal distance of fully erupted teeth
M26.39 Other anomalies of tooth position of fully erupted tooth or teeth
M26.4 Malocclusion, unspecified
M26.5 Dentofacial functional abnormalities
M26.50 …… unspecified
M26.51 Abnormal jaw closure
M26.52 Limited mandibular range of motion
M26.53 Deviation in opening and closing of the mandible
M26.54 Insufficient anterior guidance
M26.55 Centric occlusion maximum intercuspation discrepancy
M26.56 Non-working side interference
M26.57 Lack of posterior occlusal support
M26.59 Other dentofacial functional abnormalities
M26.6 Temporomandibular joint disorders

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