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The CPT® Code 86921 refers to a laboratory procedure known as the compatibility test using the incubation technique. This test is essential for determining the compatibility between a donor's blood and a recipient's blood, ensuring safe blood transfusions. Compatibility testing, often referred to as cross-matching (CM), is a critical step in the transfusion process to prevent adverse reactions. The incubation technique specifically involves warming the recipient's red blood cells to a temperature of 37°C for a duration of 30 minutes, followed by an observation period for any signs of agglutination, which indicates a reaction between the donor and recipient blood. This method is particularly useful in identifying potential incompatibilities that may not be detected by other techniques. The compatibility test is vital for patients who may have a history of blood transfusions or those with specific antibodies that could lead to complications during a transfusion. By ensuring that the blood types are compatible, healthcare providers can significantly reduce the risk of transfusion-related reactions, thereby enhancing patient safety during blood transfusions.
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The compatibility test using the incubation technique (CPT® Code 86921) is indicated in the following scenarios:
The procedure for conducting the compatibility test using the incubation technique involves several critical steps:
Following the compatibility test using the incubation technique, the results must be carefully documented. If agglutination is observed, the blood unit is deemed incompatible, and alternative donor units must be considered. In cases where no agglutination is detected, the blood unit is considered compatible and may proceed to transfusion. It is essential to communicate the results to the healthcare team promptly to ensure patient safety. Additionally, any positive findings should lead to further investigation to identify the specific antibodies involved, which may require additional testing or consultation with a transfusion medicine specialist.
| Short Descr | COMPATIBILITY TEST INCUBATE | Medium Descr | COMPATIBILITY EACH UNIT INCUBATION | Long Descr | Compatibility test each unit; incubation technique | 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 | APC Status Indicator | STV-Packaged Codes | 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. | 26 | Professional component: certain procedures are a combination of a physician or other qualified health care professional component and a technical component. when the physician or other qualified health care professional component is reported separately, the service may be identified by adding modifier 26 to the usual procedure number. | 59 | Distinct procedural service: under certain circumstances, it may be necessary to indicate that a procedure or service was distinct or independent from other non-e/m services performed on the same day. modifier 59 is used to identify procedures/services, other than e/m services, that are not normally reported together, but are appropriate under the circumstances. documentation must support a different session, different procedure or surgery, different site or organ system, separate incision/excision, separate lesion, or separate injury (or area of injury in extensive injuries) not ordinarily encountered or performed on the same day by the same individual. however, when another already established modifier is appropriate it should be used rather than modifier 59. only if no more descriptive modifier is available, and the use of modifier 59 best explains the circumstances, should modifier 59 be used. note: modifier 59 should not be appended to an e/m service. to report a separate and distinct e/m service with a non-e/m service performed on the same date, see modifier 25. | 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. |
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| 2011-01-01 | Changed | Short description changed. |
| 1993-01-01 | Added | First appearance in code book in 1993. |
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