See this chapter of the UMC except as provided below. 803.1.10 Chimney and Vents. See this section of the UMC except delete the following language: "Where vents extend outdoors above the roof more than 5 feet (1524mm) higher than required by Table 802.6.1, and where vents terminate in accordance with Section 802.6.1 (1)(b), the outdoor portion of the vent shall be enclosed as required by this section for vents not considered to be exposed to the outdoors or such venting shall be engineered."
N.M. Admin. Code § 14.9.2.16