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The CPT® Code 86689 refers to a confirmatory test for antibodies against human T-lymphotropic virus type I (HTLV-I), human T-lymphotropic virus type II (HTLV-II), or human immunodeficiency virus (HIV) types I and II. This test is crucial for diagnosing infections caused by these viruses, which are known to be sexually transmitted and can also be transmitted through unscreened blood, shared needles, or from mother to child during pregnancy or breastfeeding. HTLV-I and HTLV-II are associated with serious health conditions, including disorders of the bone marrow and blood cells, with HTLV-I specifically linked to adult T-cell leukemia. HIV, on the other hand, compromises the immune system by targeting and destroying CD4 T cells, which are essential for the body’s defense against infections. The progression of HIV can lead to acquired immunodeficiency syndrome (AIDS), the most severe stage of the infection. The testing process typically begins with an enzyme immunoassay (EIA) to detect the presence of antibodies in a blood sample. If the EIA yields a positive result, a confirmatory test is conducted using the Western blot method, which is a more specific immunoassay technique that separates proteins based on size and shape, allowing for the identification of antibodies to HTLV-I, HTLV-II, HIV-I, or HIV-II. This confirmatory testing is essential for accurate diagnosis and subsequent management of these viral infections.
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The confirmatory test represented by CPT® Code 86689 is indicated for the following conditions:
The procedure for CPT® Code 86689 involves several critical steps to ensure accurate detection of antibodies. Initially, a blood sample is collected from the patient, which is then subjected to an enzyme immunoassay (EIA). This initial screening test is designed to detect the presence of antibodies specific to HTLV-I, HTLV-II, or HIV-I and HIV-II in the serum or plasma. If the EIA test returns a positive result, indicating the potential presence of these antibodies, a confirmatory test is performed. This confirmatory testing is conducted using the Western blot method, which is a highly specific immunoassay technique. In this step, multiple samples, including a control containing known HIV-I or HIV-II proteins, are placed side-by-side on a gel matrix. An electrical current is applied, causing the proteins to migrate through the gel, effectively separating them based on their size and shape. Following this separation, the proteins are transferred onto a thin membrane, where the patient’s sample is introduced. If antibodies to HTLV-I, HTLV-II, HIV-I, or HIV-II are present, they will bind to the corresponding proteins on the membrane. To visualize these interactions, labeled antibodies are used, allowing for the detection of the virus. The results of the test are then compared against known negative and positive control samples to confirm the presence of antibodies.
After the confirmatory testing associated with CPT® Code 86689, patients may receive their results within a specified timeframe, which can vary based on the laboratory's processing capabilities. It is essential for healthcare providers to discuss the results with the patient, including the implications of a positive or negative test outcome. In the case of a positive result, further counseling and management strategies should be implemented to address the patient's health needs and potential treatment options. Additionally, patients may be advised on preventive measures to reduce the risk of transmission to others. Follow-up testing may also be necessary to monitor the patient's health status and response to any treatment initiated.
| Short Descr | HTLV/HIV CONFIRMJ ANTIBODY | Medium Descr | ANTIBODY HTLV/HIV ANTIBODY CONFIRMATORY TEST | Long Descr | Antibody; HTLV or HIV antibody, confirmatory test (eg, Western Blot) | Status Code | Statutory Exclusion (from MPFS, may be paid under other methodologies) | Global Days | XXX - Global Concept Does Not Apply | PC/TC Indicator (26, TC) | 9 - Not Applicable | Multiple Procedures (51) | 9 - Concept does not apply. | Bilateral Surgery (50) | 9 - Concept does not apply. | Physician Supervisions | 09 - Concept does not apply. | Assistant Surgeon (80, 82) | 9 - Concept does not apply. | Co-Surgeons (62) | 9 - Concept does not apply. | Team Surgery (66) | 9 - Concept does not apply. | Diagnostic Imaging Family | 99 - Concept Does Not Apply | CLIA Waived (QW) | No | APC Status Indicator | Conditionally packaged laboratory tests | Type of Service (TOS) | 5 - Diagnostic Laboratory | Berenson-Eggers TOS (BETOS) | T1H - Lab tests - other (non-Medicare fee schedule) | MUE | 2 | CCS Clinical Classification | 235 - Other Laboratory |
| 90 | Reference (outside) laboratory: when laboratory procedures are performed by a party other than the treating or reporting physician or other qualified health care professional, the procedure may be identified by adding modifier 90 to the usual procedure number. | GA | Waiver of liability statement issued as required by payer policy, individual case | 91 | Repeat clinical diagnostic laboratory test: in the course of treatment of the patient, it may be necessary to repeat the same laboratory test on the same day to obtain subsequent (multiple) test results. under these circumstances, the laboratory test performed can be identified by its usual procedure number and the addition of modifier 91. note: this modifier may not be used when tests are rerun to confirm initial results; due to testing problems with specimens or equipment; or for any other reason when a normal, one-time, reportable result is all that is required. this modifier may not be used when other code(s) describe a series of test results (eg, glucose tolerance tests, evocative/suppression testing). this modifier may only be used for laboratory test(s) performed more than once on the same day on the same patient. | GY | Item or service statutorily excluded, does not meet the definition of any medicare benefit or, for non-medicare insurers, is not a contract benefit | GZ | Item or service expected to be denied as not reasonable and necessary |
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| 2013-01-01 | Changed | Short Descriptor changed. |
| 1990-01-01 | Added | First appearance in code book in 1990. |
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