How To Number Supernumerary Teeth
This follows the "Universal/National" system that is commonly used in the U.S.
This system is identified as code set "JP" on dental claim forms and on HIPAA standard electronic dental claim transactions.
Permanent Dentition:

Primary Dentition:

Source: "Current Dental Terminology, CDT 2009 - 2010", American Dental Association
Further details can be found in the CDT manual.
See also ANSI/ADA/ISO Specification No. 3950 page.
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