When adding a new HTA External Code System Information page ensure that a row for the code system is added to the index at the following link: HTA — External Terminologies - Information – Code System Metadata Records Index

Data element name

Sub data element name


Code System Owner

NameAmerican Dental Association
Email address
Phone number
Address211 East Chicago Avenue Chicago, IL 60610-2678
Code System Maintainer (Steward)Name
Email address
Phone number
Code System PublisherName
Email address
Phone number
Code System NamesFormal name of the code systemAmerican Dental Association Area of Oral Cavity System
Short name of the code systemADAAreaOralCavitySystem
Code System Technical IdentifiersHTA-endorsed URIhttp://terminology.hl7.org/CodeSystem/ADAAreaOralCavitySystem
HTA-endorsed OID
Other URIs
Other OIDs
Case Sensitive Codes (TRUE/FALSE)TRUE (default value)
Code System InformationLink

The Area of Oral Cavity System is accepted and approved by the ADA and is the most commonly used system used by dental professionals in America. 

Area of the oral cavity is designated by a two-digit code.

The Area of Oral Cavity System can be found in the ADA Comprehensive ADA Dental Claim Form Completion Instructions. For more information see here: https://www.ada.org/publications/cdt/ada-dental-claim-form

Arrangement or agreements with HL7 for use of content
A Statement of Understanding (SOU) between ADA and HL7 exists here: http://www.hl7.org/documentcenter/public/mou/ADA%20HL7%20SOU%202021_signed.pdf
Version management

Code System Copyright, Intellectual Property and LicensingCopyright Statement

Copyright InformationNo official copyright statement is available. For general information see paper form located here : https://www.ada.org/-/media/project/ada-organization/ada/ada-org/files/publications/cdt/v2019adadentalclaimcompletioninstructions_v3_2022feb.pdf?rev=70d192ad312a47f285487c1d69de4190&hash=8EFBBD50FA335262C463823E1CA83DFE
Intellectual Property Information
Licensing Information
HTA endorsement status (Draft, In review, Endorsed for use, Pending re-endorsement, Retired) ValueEndorsed for Use
Assignment date20220407
HTA review statusLast review date20220407
Next review date20230407
Information current as at (date)
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