Agricultural practices can lead to water pollution .

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The CPT codes to be used for this case will be letter B: 
-90710 - cpt code for Measles, mumps, rubella, and varicella vaccine (MMRV), live, for subcutaneous use
-90460 -  cpt code for administration of a vaccine with counseling by qualified healthcare professional which is the first and only component administered 

In the statement, it was only indicated that a child received once. No details as to whether this was a booster shot.