Does the California Strangulation law only apply to domestic violence incidents?

Yes, the California Strangulation Law amends Penal Code section 273.5 which applies only to domestic violence cases. Other than your testimony, if you were strangled, there may be medical evidence of the strangulation or photographs of your bruising which would support your case. Depending on the level of your injuries and the defendant's past criminal record, this case could range from a discharge (DA does not file) to a misdemeanor battery to a felony battery with injuries. It really depends on the level of proof and the injuries sustained.

Stangulation is not limited to domestic violence cases. It is difficult to say how the case will "play out" without knowing your injuries, the defendant's criminal history, whether any witnesses called 911 and the court that will handle the case.

Assault and battery are not limited to DV cases. Keep in mind that testimony is evidence as well.

Any marks on you, along with your testimony and his answers to the police questions may be all the information that is needed to prosecute. If the matter is being sent to the DA's office, then it is very likely that the police have probable cause to proceed further. I wish you the best.