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California Department of Developmental Services1600 9th Street
P. O. Box 944202
Sacramento, CA 94244-2020
Info: (916) 654-1690
TTY: (916) 654-2054
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Diagnostic Information and Instruments
Diagnostic Information
The Client Development Evaluation Report (CDER) is an instrument used to collect diagnostic and evaluation information on individuals with developmental disabilities. A CDER is completed by a regional center or developmental center on each individual at the time of the initial Individual Program Plan (IPP) and is updated whenever there is a new IPP.
Changes to the CDER Reports and Instruments
In January 2008, the Department began transitioning its CDER database to a revised instrument with more current diagnostic standards and updated evaluation questions. This transition is taking place in phases with the full transition expected to be completed in 2011. As a result of this transition, no new CDER information will be released until Fall 2008.
While some of the revised CDER information is similar to that from the prior system, many data items are changed or new. Information from these items will not be comparable to prior information.
Quarterly Reports: As DDS embarks on this transition, there will be a gap in CDER updates. No Quarterly Report will be posted until Fall 2008.
The CDER data will be reported from the revised system as new records become available, and from the former system for records that have not yet been updated. On interim reports and data requests, DDS will combine these two datasets where possible. When the transition is complete DDS will create reports and data extracts based solely on the revised CDER. Information requests concerning CDER data may be directed to DDS Data Extraction Unit at DataX@dds.ca.gov or by phone at (916) 651-7435.
Quarterly CDER Client Characteristics Reports
- Data Interpretation Considerations and Limitations (PDF)
- Information to assist users in interpreting changes in the numbers from one quarterly report to another.
- Quarterly Client Characteristics Report
- Statewide summary demographic and diagnostic information by regional center, developmental center, qualifying diagnosis, ethnicity, and age.
- Quarterly Client Characteristics by County of Residence
- Demographic and diagnostic information by county of residence.
Diagnostic Instruments
- Client Development Evaluation Report (DS 3753) (118 KB/18 pages PDF)
- The Client Development Evaluation Report (CDER) is an instrument used to collect diagnostic and evaluation information on individuals with developmental disabilities.
(Revised CDER) - Client Development Evaluation Report Answer Sheet (DS 3752) (26 KB/2 pages PDF)
- This form is to record CDER information. (Revised CDER)
- CDER Manual (16,066 KB/259 pages PDF)
- The purpose of this manual is to provide detailed instructions on how to complete and use the CDER. (Revised CDER)
- CDER Update Bulletins
- Update Bulletins pertaining to the CDER Manual.
For additional information, please contact the Data Request line at (916) 651-7435 or send an e-mail datax@dds.ca.gov.