When performing chemistry testing, if a specific analyte is not listed in the lab section of the CPT® book, where should we be looking?


If a specific analyte is not listed in the laboratory section of the CPT® book, look to the section for Category III codes. If that search is unsuccessful, next look to a methodology code. If neither the analyte nor the method is in the CPT book, use the unlisted procedure code 84999. Be aware that this code requires a special report for accurate billing.

84999 Unlisted chemistry procedure

This question was answered in our Coding Essentials for Laboratories. For more hot topics relating to laboratory services, please visit our store or call us at 1.800.252.1578, ext. 2.


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