Methods, systems, and devices are described for wireless communication. One method includes identifying uplink control information (UCI) for a component carrier (CC) of a carrier aggregation (CA) configuration which may include a primary cell (PCell) and, in some aspects, a physical uplink control channel (PUCCH) enabled secondary cell (SCell); determining to include cyclic redundancy check (CRC) information for the UCI based at least in part on a UCI characteristic or an uplink control channel format; and transmitting an uplink channel comprising the UCI and the CRC information.