How is a 'Unique' test defined?

How is a 'Unique' test defined?

• A. Each test counts as unique if CPT code differs.
• B. Unique test defined by CPT code set; multiple results of same unique test counted as one; tests with overlapping elements are not unique (e.g., CBC Hb, CBC without differential, platelet count).
• C. All tests are unique unless same CPT code repeated.
• D. Unique tests require external verification.

Answer: (B)

Unique tests are determined by the CPT code set that defines the test. When multiple results come from the same CPT code set (the same test), they count as a single unique test. Tests that share elements or are components of the same panel are not considered unique because they reflect the same underlying test, even if reported as different components. For example, CBC with hemoglobin, CBC without differential, and platelet count are all parts of the same CBC panel, so they count as one unique test rather than three. If the CPT code set differs, that indicates a different test and would be counted separately.

Unique tests are determined by the CPT code set that defines the test. When multiple results come from the same CPT code set (the same test), they count as a single unique test. Tests that share elements or are components of the same panel are not considered unique because they reflect the same underlying test, even if reported as different components. For example, CBC with hemoglobin, CBC without differential, and platelet count are all parts of the same CBC panel, so they count as one unique test rather than three. If the CPT code set differs, that indicates a different test and would be counted separately.