Question: “What is the best code for elevated D-dimer test?”
Answer: Currently there is no official determination as to the best code for this test. 790.6, other abnormal blood chemistry, relates to chemicals/elements in the blood such as cobalt, copper, iron or lead and does not apply. Some coders like 790.92, abnormal coagulation profile. However, the D-dimer test looks for the breakdown of clots, rather than coagulation. Therefore, 790.99, other nonspecific findings on examination of blood, is recommended. The D-dimer test measures the levels of dextro dimer fragments in the blood. This can alert the physician to the presence of venous thromboembolisms. Venous thromboembolisms include both deep venous thromboses and also pulmonary embolisms.
Jane Barta, RHIA, RMC Coding Consultant
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