NVDEC HEVC coded_height

I have a video feed that reports a height of 1080 (pic_height_in_luma_samples when parsing the SPS). When I set up the decoder using CUVIDDECODECREATEINFO.ulHeight = 1080, HandleVideoSequence returns a coded_height of 1088.

Is there a requirement that the coded_height must be aligned to 16?

Erin