Los Angeles FIPS 06037 can have two SSA county codes: 05210 and 05200
Source File URL: www.cms.gov/Medicare/Medicare-Fee-for-Service-Payment/AcuteInpatientPPS/Downloads/FY_12_FR_County_to_CBSA_Xwalk.zip
Source Page: https://www.cms.gov/Medicare/Medicare-Fee-for-Service-Payment/AcuteInpatientPPS/FY-2012-IPPS-Final-Rule-Home-Page-Items/CMS1250507.html
NBER URL: http://www.nber.org/data/cbsa-msa-fips-ssa-county-crosswalk.html
Source: FY_12_FR_County_to_CBSA_Xwalk.txt
cbsatocountycrosswalk2012 set up by Jean Roth , jroth@nber.org , 20 Dec 2016