ICD-9-CM 780.93 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 780.93 should only be used for claims with a date of service on or before September 30, 2015. For claims with a date of service on or after October 1, 2015, use an equivalent ICD-10-CM code (or codes).
Memory loss for events and experiences that occurred before the incident that produced the amnesia
Partial or complete loss of memory caused by organic or psychological factors. The loss may be temporary or permanent, and may involve old or recent memories. Compare forgetting and memory decay
Systematic and extensive loss of memory caused by organic or psychological factors. The loss may be temporary or permanent, and may involve old or recent memories