Tools and Frameworks

Tools for Categorizing Injuries using ICD Codes


Overview of the ICD Injury Matrices


External Cause-of-Injury (E-code) Matrices


ICD-10-CM (Updated October 2020)


Note: The ICD-10 External Cause Matrix was updated to include code W46 Contact with hypodermic needle. The code is categorized as “Unintentional” and “Cut or Pierce” (9/9/2011).


ICD-9 modified to be consistent with ICD-10 External Cause of Injury


ICD-9-CM (Matrix updated and maintained by NCIPC)


Injury Diagnosis Matrices


ICD-10 (IMD Matrix)

ICD-9-CM (Barell Matrix)


Classification Systems