The definitions in Iowa Code section 80H.1 are adopted and incorporated herein. In addition:
"In the line of duty" or "on duty" means the peace officer is working within the scope of a peace officer, or there is evidence the death or serious injury of the peace officer or the fact the peace officer is missing is related to the peace officer's actions within the scope of a law enforcement officer.
"Serious injury" means any of the following:
1. Disabling mental illness;
2. Bodily injury which does any of the following:
* Creates a substantial risk of death;
* Causes serious permanent disfigurement; or
* Causes protracted loss or impairment of the function of any bodily member or organ.
Iowa Admin. Code r. 661-89.301