ICD-10-CM diagnosis code
M26.57 Lack of posterior occlusal support
- Billable
- Yes, a complete code (FY2026)
- Category
- M26
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Other codes in M26
78 complete codes in this category.
- M26.51Abnormal jaw closure
- M26.52Limited mandibular range of motion
- M26.53Deviation in opening and closing of the mandible
- M26.54Insufficient anterior guidance
- M26.55Centric occlusion maximum intercuspation discrepancy
- M26.56Non-working side interference
- M26.57Lack of posterior occlusal support
- M26.59Other dentofacial functional abnormalities
- M26.601Right temporomandibular joint disorder, unspecified
- M26.602Left temporomandibular joint disorder, unspecified
- M26.603Bilateral temporomandibular joint disorder, unspecified
- M26.609Unspecified temporomandibular joint disorder, unspecified side
Documentation tips
- Make sure the note supports every element of the title, “Lack of posterior occlusal support”: each detail in it should be traceable to the history, examination or assessment.
- Code to the highest specificity the documentation supports. If a detail is missing from the note, add it to the note rather than choosing a less specific code by default.
- Check the Tabular List and official guidelines for instructional notes (“code first”, “use additional code”, Excludes1/Excludes2) that apply to M26.
ICD-10-CM is developed by the National Center for Health Statistics (NCHS), Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, and is based on the WHO ICD-10. Codes and titles are reproduced unchanged from the FY2026 code list (effective 1 October 2025). Their use here does not imply endorsement by CDC, HHS or the U.S. Government. Changes effective on or after 1 October 2026 may not be reflected yet; check the current release at cdc.gov or cms.gov before submitting claims.
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