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Central Distributor SASD: Description of Data Elements

E_CCSn - Clinical Classifications Software (CCS) for ICD-9-CM External Cause of Injury Code
Documentation Sections:
General Notes
Uniform Values
State Specific Notes
General Notes

Clinical Classifications Software (CCS) consists of over 260 diagnosis categories. All ICD-9-CM diagnosis codes including external cause of injury codes E codes are classified.

Prior to 2003, "E codes" are included in the diagnosis array (DXn) with CCS values in the corresponding array DXCCSn. From January 2003 to September 2015 , any separately reported E codes and any E codes encountered in the diagnosis array are placed in a separate array specific to E codes (ECODEn). The corresponding array E_CCSn contains the CCS category. For data beginning in the fourth quarter of 2015, ICD-10-CM external cause of morbidity codes are stored the data element I10_DXn with the corresponding array of I10_ECauseCCSn to indicate the implementation of the ICD-10-CM/PCS coding system.

In the CCS, E codes are classified into 20 categories (values 2601-2621). E_CCSn is missing (.), if there is no E code (ECODEn = " "). E_CCSn is set to invalid (.A), if the E code (ECODEn) is invalid by the HCUP criteria.


Labels for CCS categories are provided as an ASCII file in HCUP Tools: Labels and Formats.


Formats to label CCS categories are documented in HCUP Tools: Labels and Formats. A format is also available to map CCS codes into a few broad classes of conditions based on ICD-9-CM chapters.

Uniform Values
VariableDescriptionValueValue Description
E_CCSnClinical Classifications Software (CCS) for ICD-9-CM External Cause of Injury Code2601-2621CCS E-code Class (beginning with 1998 data)
.No diagnosis code
.AInvalid diagnosis code: beginning with 1998 data, EDX02
.CInconsistent: beginning with 1998 data EDX03
State Specific Notes



Internet Citation: HCUP Central Distributor SASD Description of Data Elements - All States. Healthcare Cost and Utilization Project (HCUP). May 2024. Agency for Healthcare Research and Quality, Rockville, MD.
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Last modified 5/22/24