There isn't a standardized "axle code 19" for 1995 Ford Broncos. Ford used various codes and markings to identify axles, but a simple numerical code like "19" isn't part of their usual system. The axle type is usually identified by a combination of letters and numbers stamped on the axle housing itself, or found in the vehicle's documentation (like the build sheet or sticker in the glovebox).
To find out what axle you have, you'll need to look for these markings on the differential housing. Information like the ratio (e.g., 3.55, 3.73, 4.10) will also be present. Pictures of the axle and its markings would be helpful in identifying it.