Mo. Rev. Stat. § 565.073: Domestic assault, second degree — penalty.

1. A person commits the offense of domestic assault in the second degree if the act involves a domestic victim, as the term "domestic victim" is defined under section 565.002, and he or she:

(1) Knowingly causes physical injury to such domestic victim by any means, including but not limited to, use of a deadly weapon or dangerous instrument, or by choking or strangulation; or

(2) Recklessly causes serious physical injury to such domestic victim; or

(3) Recklessly causes physical injury to such domestic victim by means of any deadly weapon.

2. The offense of domestic assault in the second degree is a class D felony.