For Medicare and any payers that adopt the new HCPCS "G" codes, specimen validity testing is not separately billable. The code descriptors for all the new codes specifically include specimen validation testing when performed.
In addition, Medicare added verbiage in the 2015 NCCI manual: " Providers performing validity testing on urine specimens utilized for drug testing should not separately bill the validity testing. For example, if a laboratory performs a urinary pH, specific gravity, creatinine, nitrates, oxidants, or other tests to confirm that a urine specimen is not adulterated, this testing is not separately billed. The Internet-only Manual, Publication 100-04, Medicare Claims Processing Manual, Chapter 16 (Laboratory Services), Section 10 (Background) indicates that a laboratory test is a covered benefit only if the test result is utilized for management of the beneficiary’s specific medical problem. Testing to confirm that a urine specimen is unadulterated is an internal control process that is not separately reportable."
So no billing of 81003, 82570, 84311, 83986 for specimen validity testing. The 82542 CPT code was revised for 2016 and would not be reported for drug testing - Column chromatography, includes mass spectrometry, if performed (eg, HPLC, LC, LC/MS, LC/MS-MS, GC, GC/MS-MS, GC/MS, HPLC/MS), non-drug analyte(s) not elsewhere specified, qualitative or quantitative, each specimen
For Medicare and any payer that adopts the new HCPCS "G" codes, the maximum will be 2 codes - 1 for the presumptive testing and 1 for the definitive testing.