One expert suggests all impacts to the head be recorded in the patients medical records so that later manifestation of symptoms can be considered as possible PCS. Without this possible concussion in the medical record, the later manifestation of a cluster of PCS symptoms can be confusing to the doctor and patient leading to errant diagnoses.

The following International Code of Diagnostics are recommended for the patients' medical record.

2012 ICD-9-CM Diagnosis Code 850.9
Concussion, unspecified
A violent jar or shock, or the condition which results from such an injury.

2012 ICD-10-CM S06.0X0A Concussion without loss of consciousness, initial encounter