ASSAULT IN THE FIRST DEGREE 
C.R.S. § 18-3-202 
(1)      A person commits the crime of assault in the first degree if:(a)       With intent to cause serious bodily injury to another person, he causes serious bodily injury to any person by means of a deadly weapon; or
(b)      With intent to disfigure another person seriously and permanently, or to destroy, amputate, or disable permanently a member or organ of his body, he causes such an injury to any person; or
(c)       Under circumstances manifesting extreme indifference to the value of human life, he knowingly engages in conduct which creates a grave risk of death to another person, and thereby causes serious bodily injury to any person; or
(d) (Repealed)
(e)       With intent to cause serious bodily injury upon the person of a peace officer, firefighter, or emergency medical service provider, he or she threatens with a deadly weapon a peace officer, firefighter, or emergency medical service provider engaged in the performance of his or her duties, and the offender knows or reasonably should know that the victim is a peace officer, firefighter, or emergency medical service provider acting in the performance of his or her duties;
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(2)(a)       If assault in the first degree is committed under circumstances where the act causing the injury is performed upon a sudden heat of passion, caused by a serious and highly provoking act of the intended victim, affecting the person causing the injury sufficiently to excite an irresistible passion in a reasonable person, and without an interval between the provocation and the injury sufficient for the voice of reason and humanity to be heard, it is a class 5 felony.
(b)      If assault in the first degree is committed without the circumstances provided in paragraph (a) of this subsection (2), it is a class 3 felony.
(c)       If a defendant is convicted of assault in the first degree pursuant to subsection (1) of this section, the court shall sentence the defendant in accordance with the provisions of section 18-1.3-406.
_______________________________________________________________ASSAULT IN THE THIRD DEGREE 
C.R.S. § 18-3-204
(1)      A person commits the crime of assault in the third degree if:
(a)       The person knowingly or recklessly causes bodily injury to another person or with criminal negligence the person causes bodily injury to another person by means of a deadly weapon;
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(3)      Assault in the third degree is a class 1 misdemeanor and is an extraordinary risk crime that is subject to the modified sentencing range specified in section 18-1.3-501(3) .

ASSAULT IN THE SECOND DEGREE
C.R.S. § 18-3-203 
(1)      A person commits the crime of assault in the second degree if:
(a) (Repealed)
(b)      With intent to cause bodily injury to another person, he or she causes such injury to any person by means of a deadly weapon; or
(c)       With intent to prevent one whom he or she knows, or should know, to be a peace officer, firefighter, or emergency medical service provider from performing a lawful duty, he or she intentionally causes bodily injury to any person; or
(d)      He recklessly causes serious bodily injury to another person by means of a deadly weapon; or
(e)       For a purpose other than lawful medical or therapeutic treatment, he intentionally causes stupor, unconsciousness, or other physical or mental impairment or injury to another person by administering to him, without his consent, a drug, substance, or preparation capable of producing the intended harm; 
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(2)(a)       If assault in the second degree is committed under circumstances where the act causing the injury is performed upon a sudden heat of passion, caused by a serious and highly provoking act of the intended victim, affecting the person causing the injury sufficiently to excite an irresistible passion in a reasonable person, and without an interval between the provocation and the injury sufficient for the voice of reason and humanity to be heard, it is a class 6 felony.
(b)      If assault in the second degree is committed without the circumstances provided in paragraph (a) of this subsection (2), it is a class 4 felony.
(b.5)   Assault in the second degree by any person under subsection (1) of this section without the circumstances provided in paragraph (a) of this subsection (2) is a class 3 felony if the person who is assaulted, other than a participant in the crime, suffered serious bodily injury during the commission or attempted commission of or flight from the commission or attempted commission of murder, robbery, arson, burglary, escape, kidnapping in the first degree, sexual assault, sexual assault in the first or second degree as such offenses existed prior to July 1, 2000, or class 3 felony sexual assault on a child.