tx_researcher
This cul-de-sac road intersecting with Mills County Road 273, just south of FM 218, is a private road and is not numbered. USDA's Farm Service Map Data does not have a county road designation for this road. Garmin's map, CN North America NT 2022.20, identifies it simply as "unpaved road," with no County Road number.
The actual "County Road 272" intersects County Road 273 just to the south of this location. 
This mistake also appears on Google Maps but it is not correct.