Colorado Subscriber Answer: Medicare does require you to append modifier -QW (CLIA-waived test) to all Clinical Laboratory Improvement Amendments waived-status test codes, such as 81002 (Urinalysis, by dipstick or tablet reagent for bilirubin, glucose, hemoglobin, ketones, leukocytes, nitrite, pH, protein, specific gravity, urobilinogen, any number of these constituents; non-automated, without microscopy). Remember that modifier -QW is a Medicare modifier.
Local private payers may have different rules. Check with your representatives on their CLIA-waived test reporting requirements. Try, if possible, to obtain their regulations in writing to ensure coding compliance.