# CCN → CBSA + Wage Index crosswalk

`vlada_curated.dim_ccn_cbsa` · Provider identity · status live

Maps each hospital CCN to its geographic CBSA, county FIPS, and IPPS wage index. The bridge for wage-index localization of inpatient payment and for placing a hospital in its market.

**Grain.** One row per hospital CCN — its CBSA, county FIPS, and IPPS wage index.

| column | type | meaning |
|---|---|---|
| ccn | string |  |
| wage_index | double |  |
| geographic_cbsa | string |  |
| county_fips | string |  |

Query it: `query_substrate` with `SELECT ... FROM vlada_curated.dim_ccn_cbsa WHERE ... LIMIT 100`; read `describe_data_source("vlada_curated.dim_ccn_cbsa")` first.