I am curious if it is considered appropriate for a laboratory to add additional ICD10 codes to a claim based on the results of testing. A good example would be a patient sees their OB/GYN for an HPV test Z01.419 Encounter for gynecological examination (general) (routine) without abnormal findings, which works fine for the E/M service, but not necessarily for the lab test. The test comes back positive for the presence of High Risk HPV type 16 or 18, is it appropriate for the lab to add codes R87.810 or R87.811? Or should the lab request that the ordering physician add these codes to the order retroactively based on the test results?