Can or How do you code labs on Air, Water & Soil?

I'm a CPC-A so I am not 100% confident in my answer to this question so can anyone out there tell me...as medical coders do we code for labs conducted on air, water and/or soil sample via OSHA standards?

I don't recall coding or learning to code for these specimans, I thought it was only human related specimans but my employer has a long list of lab work done testing air, soil & water for things ranging from Aluminum to Zinc.

Any thoughts or guidance out there?

Thanks,
Amy

Can or How do you code labs on Air, Water & Soil?