Medi-Cal Third-Party Liability Carrier Codes

California data identifies third parties potentially liable for medical expenses before Medi-Cal payment. The information is sourced from the Carrier Code Master File and is updated monthly. Specific row and column counts are not provided.

Use Cases

• Identify liable third-party carriers for billing using Carrier Code Master File data
• Support Medi-Cal's payer-of-last-resort policy by analyzing other health coverage entities
• Monitor updates to the carrier code list for monthly eligibility verification processes

Strengths

• Managed by the State of California, an authoritative source for Medi-Cal data
• Updated monthly, providing regular refreshes of carrier information

Limitations

• Unknown data volume and feature set, as row and column counts are not specified
• Point-in-time nature may require joining with other files for a complete eligibility picture

Provenance

Source

State of California

Collection Method

Retrieved from the Carrier Code Master File (CCMF)

Time Range

null

Freshness

Updated monthly; last updated March 2026.

Geography

California, United States