Behavorial Health Revenue coding...HELP!!!

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HI everyone,
I am in need of assistance regarding revenue coding. We are an outpatient BH facility whom offers an IOP program. We were given coding on a new contract however, they are not listing actual CPT or HCPCS just says "coding" and it provides "0905 and 0906" coding and the definitions. Some forums are saying that these codes are linked with HCPCS manual codes of H0015 (MH) or S9480 (sub abuse). Should this throw red flags and I contact the Medicaid office to review and give us actual coding or should I automatcially cross link this with a CPT or HCPCS code?

Please help if you can,