Question: is crn the same as sss number?
Answer: No, they're different. The Common Reference Number (CRN) is issued to SSS members who apply for a Unified Multi-Purpose ID (UMID). It links the ID numbers of SSS, GSIS, Pag-IBIG Fund, and PhilHealth. ... Meanwhile, the SSS number has 10 digits in this format: ##-#######-#.