Medi-Cal Rates/Codes

Medi-Cal Rates: 
The file lists the maximum reimbursement rates payable by the Medi-Cal program for covered procedures described in the HCPCS and CPT-4 coding system.
http://files.medi-cal.ca.gov/pubsdoco/rates/rateshome.asp

DX Codes: 
This page provided by the Medicare Learning Network (Medlearn) provides tools to help providers and suppliers keep up to date with the latest educational information as it relates to ICD-9 Coding Services.
http://www.cms.hhs.gov/medlearn/icd9code.asp
 
Alpha-Numeric HCPCS Files: 
These files contain the Level II alpha-numeric HCPCS procedure and modifier codes, their long and short descriptions, and applicable Medicare administrative, coverage, and pricing data.
http://www.cms.hhs.gov/HCPCSReleaseCodeSets/

Additional information can be found at:
http://www.medi-cal.ca.gov

KHS Adjustment Codes:
These provide descriptive adjustment codes that help anyone looking for status determine how a claim was processed.