ICD-10-CM diagnosis code
K08.51 Open restoration margins of tooth
- Billable
- Yes, a complete code (FY2026)
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Other codes in K08
73 complete codes in this category.
- K08.491Partial loss of teeth due to other specified cause, class I
- K08.492Partial loss of teeth due to other specified cause, class II
- K08.493Partial loss of teeth due to other specified cause, class III
- K08.494Partial loss of teeth due to other specified cause, class IV
- K08.499Partial loss of teeth due to other specified cause, unspecified class
- K08.50Unsatisfactory restoration of tooth, unspecified
- K08.51Open restoration margins of tooth
- K08.52Unrepairable overhanging of dental restorative materials
- K08.530Fractured dental restorative material without loss of material
- K08.531Fractured dental restorative material with loss of material
- K08.539Fractured dental restorative material, unspecified
- K08.54Contour of existing restoration of tooth biologically incompatible with oral health
Documentation tips
- Make sure the note supports every element of the title, “Open restoration margins of tooth”: 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 K08.
The international WHO ICD-10 also has K08, with its inclusion and exclusion notes; titles and detail can differ from ICD-10-CM.
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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