How To Use CPT Code 83519

CPT 83519 describes the quantitative measurement of a noninfectious antigen or noninfectious antibody using radioimmunoassay (RIA). This article will cover the description, procedure, qualifying circumstances, appropriate usage, documentation requirements, billing guidelines, historical information, similar codes and billing examples.

1. What is CPT Code 83519?

CPT 83519 can be used to measure the quantity of a noninfectious antigen or noninfectious antibody using radioimmunoassay (RIA). This code is specifically used when there is no specific analyte assigned code available, but the procedure meets the requirements based on the methodology and the analyte being tested.

2. Official Description

The official description of CPT code 83519 is: ‘Immunoassay for analyte other than infectious agent antibody or infectious agent antigen; quantitative, by radioimmunoassay (eg, RIA)’. This code is used when there is no specific analyte assigned code available, but the procedure meets the requirements based on the methodology and the analyte being tested.

3. Procedure

1. The lab analyst performs the technical steps to quantitate the noninfectious antigen or noninfectious antibody from any specimen type.
2. The procedure uses radioimmunoassay (RIA), a methodology that utilizes a gamma radioactive tagged isotope for precise measurement using a gamma counter.
3. The radioimmunoassay allows for accurate and precise measurement, making it suitable for rare and exotic tests that require high levels of accuracy.

4. Qualifying circumstances

CPT 83519 is used when there is no specific analyte assigned code available, but the procedure meets the requirements based on the methodology and the analyte being tested. The lab analyst performs the test using radioimmunoassay (RIA), also known as RIA.

5. When to use CPT code 83519

CPT code 83519 should be used when there is no specific analyte assigned code available, but the procedure meets the requirements based on the methodology and the analyte being tested. It is important to ensure that the test is performed using radioimmunoassay (RIA) for accurate and precise measurement.

6. Documentation requirements

To support a claim for CPT 83519, the following documentation is required:

• Specific details of the noninfectious antigen or noninfectious antibody being measured
• Methodology used, specifically radioimmunoassay (RIA)
• Date and time of the procedure
• Results of the quantitative measurement
• Signature of the lab analyst performing the test

7. Billing guidelines

When billing for CPT 83519, ensure that the procedure meets the requirements based on the methodology and the analyte being tested. It is important to use the appropriate code when there is no specific analyte assigned code available. Consider the tips provided for accurate and precise measurement using radioimmunoassay (RIA).

8. Historical information

CPT 83519 was added to the Current Procedural Terminology system on January 1, 1993. There have been historical changes to the code, including a code change on January 1, 2010, which introduced the use of radiopharmaceutical technique for quantitative measurement.

9. Examples

1. A lab analyst performs a radioimmunoassay (RIA) to quantitatively measure a specific noninfectious antigen in a patient’s blood sample.
2. Using radioimmunoassay (RIA), the lab analyst measures the quantity of a noninfectious antibody in a urine sample for diagnostic purposes.
3. A research laboratory utilizes radioimmunoassay (RIA) to quantitatively measure a noninfectious antigen in a rare and exotic specimen.
4. Using radioimmunoassay (RIA), the lab analyst performs a quantitative measurement of a noninfectious antibody in a cerebrospinal fluid sample.
5. A lab analyst uses radioimmunoassay (RIA) to measure the quantity of a noninfectious antigen in a tissue sample for research purposes.
6. Using radioimmunoassay (RIA), the lab analyst performs a quantitative measurement of a noninfectious antibody in a saliva sample for diagnostic purposes.
7. A lab analyst utilizes radioimmunoassay (RIA) to quantitatively measure a specific noninfectious antigen in a patient’s serum sample.
8. Using radioimmunoassay (RIA), the lab analyst measures the quantity of a noninfectious antibody in a synovial fluid sample for diagnostic purposes.
9. A research laboratory performs a quantitative measurement of a noninfectious antigen in a rare and exotic specimen using radioimmunoassay (RIA).
10. Using radioimmunoassay (RIA), the lab analyst measures the quantity of a noninfectious antibody in a pleural fluid sample for diagnostic purposes.