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ICD-10-CM 2027 diagnosis code

M26Dentofacial anomalies [including malocclusion]

Not billable — use a more specific code

M26 is a header code, so it can't be reported by itself. Choose one of the 10 more specific codes beneath it.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About M26

M26 is the ICD-10-CM diagnosis code for dentofacial anomalies [including malocclusion]. It belongs to block M26-M27 (dentofacial anomalies [including malocclusion] and other disorders of jaw) and chapter 13 (diseases of the musculoskeletal system and connective tissue). It is a header code, so it can't be reported by itself; one of its 10 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: M26.0 (size), M26.1 (relationship), M26.2 (relationship), M26.3 (teeth), M26.4 (unspecified), M26.5 (abnormalities), M26.6 (disorders), M26.7 (anomalies) and 2 more.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under M26

Notes that apply from higher levels

Instructions written at a parent level also apply to M26.

Broader instructions also apply from M26-M27 Dentofacial anomalies [including malocclusion] and other disorders of jaw and Chapter 13: Diseases of the musculoskeletal system and connective tissue.

Codes whose notes reference M26

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about M26

Is M26 billable?

No. M26 is a header code. Report one of its more specific subcodes instead.