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Official Description

Compatibility test each unit; immediate spin technique

© Copyright 2026 American Medical Association. All rights reserved.

Common Language Description

The CPT® Code 86920 refers to a laboratory procedure known as a compatibility test, specifically utilizing the immediate spin technique (ISCM). This test is essential for determining the compatibility between a donor's blood and a recipient's blood prior to a transfusion. Compatibility testing, often referred to as cross matching (CM), is a critical step in ensuring that the blood transfusion process is safe and effective. The immediate spin technique involves mixing the recipient's plasma or serum with the donor's red blood cells and then subjecting this mixture to immediate centrifugation. The primary goal of this procedure is to observe any signs of hemolysis (the breakdown of red blood cells) or agglutination (clumping of cells), which would indicate incompatibility. While the ISCM method is a rapid and straightforward approach, it is important to note that it may not detect all types of ABO incompatibilities. However, a negative result from this test suggests that the donor's blood is compatible with the recipient's, allowing for the safe transfusion of the blood unit. In cases where there is a positive antibody screening or a history of clinically significant antibodies, additional testing methods such as the antiglobulin technique or incubation technique may be employed to ensure thorough compatibility assessment.

© Copyright 2026 Coding Ahead. All rights reserved.

1. Indications

The compatibility test using the immediate spin technique (CPT® Code 86920) is indicated in the following scenarios:

  • Blood Transfusion: This test is performed to ensure that the blood from a donor is compatible with the recipient's blood before a transfusion is conducted.
  • Cross Matching: It is utilized as part of the cross-matching process to prevent transfusion reactions by confirming that the donor's red blood cells will not react adversely with the recipient's plasma.

2. Procedure

The procedure for conducting the compatibility test using the immediate spin technique involves several key steps:

  • Step 1: Sample Collection The first step involves collecting a blood sample from the recipient, which will be used to obtain plasma or serum for the test. A sample from the donor is also collected to provide the red blood cells needed for compatibility testing.
  • Step 2: Mixing Samples The recipient's plasma or serum is mixed with the donor's red blood cells in a test tube. This mixture is crucial for assessing compatibility, as it allows for the observation of any potential reactions between the two blood components.
  • Step 3: Centrifugation The test tube containing the mixed samples is then subjected to immediate centrifugation. This process separates the components of the blood and facilitates the observation of any hemolysis or agglutination that may occur as a result of incompatibility.
  • Step 4: Observation After centrifugation, the laboratory technician observes the test tube for signs of hemolysis or agglutination. A negative result indicates compatibility, meaning the donor's blood can be safely transfused to the recipient.

3. Post-Procedure

After the compatibility test is completed, the results are documented, and if the test is negative, the donor blood unit is deemed compatible for transfusion. It is essential to ensure that all documentation is accurate and that the results are communicated to the healthcare team involved in the transfusion process. In cases where the test indicates incompatibility, further testing may be required to identify the specific cause of the reaction, and alternative donor units may need to be considered. Additionally, the recipient's clinical status should be monitored closely following the transfusion to detect any potential adverse reactions.

Short Descr COMPATIBILITY TEST SPIN
Medium Descr COMPATIBILITY EACH UNIT IMMEDIATE SPIN TECHNIQUE
Long Descr Compatibility test each unit; immediate spin 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 9
CCS Clinical Classification 235 - Other Laboratory
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.
PD Diagnostic or related non diagnostic item or service provided in a wholly owned or operated entity to a patient who is admitted as an inpatient within 3 days
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.
GW Service not related to the hospice patient's terminal condition
Q1 Routine clinical service provided in a clinical research study that is in an approved clinical research study
XE Separate encounter, a service that is distinct because it occurred during a separate encounter
XS Separate structure, a service that is distinct because it was performed on a separate organ/structure
Date
Action
Notes
2011-01-01 Changed Short description changed.
1993-01-01 Added First appearance in code book in 1993.
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