ICD-9-CM Diagnosis Code E878.4
Diagnosis Code: E878.4 (Raw: E8784)
Description: Other restorative surgery causing abnormal patient reaction, or later complication, without mention of misadventure at time of operation
Classification: International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM)
Fiscal Year: 2026 Reference
CMS Section 111 Status: Valid for reporting.
Overview & Historical Usage
ICD-9-CM code E878.4 is designated for Other restorative surgery causing abnormal patient reaction, or later complication, without mention of misadventure at time of operation. While superseded by ICD-10 for current healthcare encounters, it remains a recognized reference code for CMS Section 111 reporting, legacy claims adjudication, and historical clinical data analysis.