Question: I've got a puzzling encounter form in front of me. The operative notes indicate the gastroenterologist performed "assays for the determination of peroxidase activity in hemoglobin." Any ideas on which CPT code I should use for this procedure? Further, what are some acceptable diagnoses for this test? Answer: The procedure the gastroenterologist describes in the notes is a guaiac occult blood test. A physician may use the test to detect trace amounts of blood in the stool, and the guaiac test is also critical to determining the presence of Crohn's disease, tumors, tuberculosis and ulcerative colitis. Good ideas: When reporting 82270, make sure you attach the appropriate ICD-9 code on the claim. Also, wait until your office gets the test slides back before reporting the blood test.
New Mexico Subscriber
Code it this way: When your gastro performs a guaiac occult blood test, you should report 82270 (Blood, occult, by peroxidase activity [e.g., guaiac], qualitative; feces, 1-3 simultaneous determinations).
Justify it this way: The guaiac test is medically necessary for a variety of symptoms, including: