International Classification of Diseases: eighth revision.

IMPORTANT • If you decide to print this document, note that it is about 156 pages. • The ICD-9 codes for External Causes of Death are actually codes E800 through E999; however, for data processing purposes NCHS never includes the letter " E " in data fields. The External Cause codes are listed at the very end of this document. • Do not confuse the External Cause codes with the ICD-9 Nature of Injury codes (800 through 999). The Nature of Injury Codes describe the medical effects of the trauma from an external cause. The Nature of Injury codes are never used for the underlying cause of death. The Nature of Injury codes are only used for multiple cause of death coding and are included under the entity axis and the record axis conditions in the multiple cause data fields. A Nature of Injury code can be distinguished from an External Cause code because a Nature of Injury flag (the number " 1 ") appears in the last position of that multiple cause data field.