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The CPT® Code 84181 refers to the Western Blot procedure, which is a sophisticated analytical technique utilized for the detection of specific proteins within body tissues or fluids. This method, also known as protein immunoblotting, is particularly significant in the field of laboratory diagnostics. The Western Blot technique involves the separation of proteins through a process called gel electrophoresis, where proteins are sorted based on their size and charge. Once separated, these proteins are transferred onto a membrane, typically made of nitrocellulose or polyvinylidene fluoride (PVDF). This membrane serves as a solid support for the proteins, allowing for further analysis. The next critical step in the Western Blot procedure is the application of target-specific antibodies that bind to the proteins of interest. These antibodies are designed to recognize and attach to particular proteins, facilitating their identification. The interpretation of the results, along with a comprehensive report, is included in the scope of this code. It is important to note that CPT® Code 84181 is applicable to both blood and other body fluids, making it a versatile tool in clinical diagnostics. Additionally, there is a related code, CPT® Code 84182, which involves the use of immunological probes for protein identification and is reported separately for each probe used. This distinction highlights the specificity and complexity of protein analysis in laboratory settings.
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The Western Blot procedure, represented by CPT® Code 84181, is indicated for various clinical scenarios where the detection of specific proteins is essential for diagnosis or monitoring. The following conditions or situations may warrant the use of this procedure:
The Western Blot procedure involves several critical steps to ensure accurate detection and identification of proteins. The following outlines the procedural steps involved:
After the Western Blot procedure is completed, the patient may not require any specific post-procedure care, as the process is typically non-invasive. However, it is essential for healthcare providers to communicate the results to the patient in a timely manner. The interpretation of the results may lead to further diagnostic testing or treatment options based on the identified proteins. Additionally, healthcare professionals should ensure that any follow-up appointments or additional testing are scheduled as necessary, depending on the findings of the Western Blot analysis.
| Short Descr | WESTERN BLOT TEST | Medium Descr | PROTEIN WESTRN BLOT I&R BLOOD/OTHER FLUID | Long Descr | Protein; Western Blot, with interpretation and report, blood or other body fluid | Status Code | Active Code | Global Days | XXX - Global Concept Does Not Apply | PC/TC Indicator (26, TC) | 6 - Laboratory Physician Interpretation Code | Multiple Procedures (51) | 0 - No payment adjustment rules for multiple procedures apply. | Bilateral Surgery (50) | 0 - 150% payment adjustment for bilateral procedures does NOT apply. | Physician Supervisions | 09 - Concept does not apply. | Assistant Surgeon (80, 82) | 0 - Payment restriction for assistants at surgery applies to this procedure... | Co-Surgeons (62) | 0 - Co-surgeons not permitted for this procedure. | Team Surgery (66) | 0 - Team surgeons not permitted for this procedure. | 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 | 3 | CCS Clinical Classification | 233 - Laboratory - Chemistry and Hematology |
| 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. | GA | Waiver of liability statement issued as required by payer policy, individual case | 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 | 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. | G8 | Monitored anesthesia care (mac) for deep complex, complicated, or markedly invasive surgical procedure | GW | Service not related to the hospice patient's terminal condition | XS | Separate structure, a service that is distinct because it was performed on a separate organ/structure |
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| 2005-01-01 | Changed | Code description changed. |
| 2004-01-01 | Changed | Code description changed. |
| 1993-01-01 | Added | First appearance in code book in 1993. |
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