CPT® Code 82486

Code deleted, to report see specific analyte code, or 82542

Official Description

Chromatography, qualitative; column (eg, gas liquid or HPLC), analyte not elsewhere specified

Common Language Description

Chromatography is a sophisticated laboratory technique utilized for the separation of chemical components within a mixture. This process employs two distinct phases: a mobile phase and a stationary phase. In the context of column chromatography, the stationary phase is established by applying a thin layer of a liquid or polymer that contains the test sample onto a solid, inert support material. This support is then inserted into a glass or metal column, which is subsequently sealed to create a controlled environment for the separation process. To enhance the efficiency of the separation, the column may be subjected to heat through an oven or other heating devices, allowing for precise temperature regulation during the mobile phase. The mobile phase is introduced by injecting or adding a gas or liquid solvent, which facilitates the movement of the sample components, known as analytes, through the column. The degree to which these analytes travel with the solvent is influenced by their polarity, leading to their separation based on differing affinities for the stationary phase. It is important to note that this qualitative test is designed to identify the presence of specific analytes within the sample, rather than quantifying their exact concentrations. An example of the application of this procedure is in the screening for diuretics in urine samples, where the presence of these substances can be detected without measuring their precise amounts.

1. Indications

The qualitative chromatography procedure is indicated for the identification of specific analytes within a sample. This technique is particularly useful in various clinical and laboratory settings where the presence of certain substances needs to be confirmed. Below are some of the explicit indications for performing this procedure:

Screening for Drugs This procedure can be utilized to detect the presence of drugs, such as diuretics, in biological samples like urine.
Identifying Chemical Compounds It is employed to identify unknown chemical compounds in a mixture, aiding in the analysis of complex samples.
Quality Control The technique is used in quality control processes to ensure the purity and composition of pharmaceutical products.

2. Procedure

The qualitative chromatography procedure involves several key steps that ensure accurate separation and identification of analytes. Each step is crucial for the successful execution of the test.

Preparation of the Column The first step involves preparing the chromatography column by applying a thin layer of the stationary phase, which may be a liquid or polymer, onto a solid, inert support. This setup is essential for the separation process.
Insertion of the Column Once the stationary phase is prepared, the support apparatus is inserted into a glass or metal column. This column is then sealed to maintain the integrity of the environment during the procedure.
Temperature Control The column may be placed in an oven or other heating device to regulate the temperature. This step is important as it can influence the behavior of the analytes during the separation process.
Introduction of the Mobile Phase The mobile phase is activated by injecting or adding a gas or liquid solvent into the column. This solvent facilitates the movement of the sample components through the stationary phase.
Separation of Analytes As the mobile phase moves through the column, the analytes begin to separate based on their polarity. The varying affinities of the analytes for the stationary phase determine how far they travel with the solvent.
Qualitative Analysis Finally, the qualitative aspect of the test is performed, which involves determining the presence of specific analytes in the sample without measuring their exact concentrations.

3. Post-Procedure

After the chromatography procedure is completed, the results are analyzed to confirm the presence of the targeted analytes. It is essential to document the findings accurately for further evaluation. Depending on the specific application, additional steps may be required, such as further testing or confirmation of results through alternative methods. Proper disposal of any used materials and adherence to laboratory safety protocols are also critical post-procedure considerations to ensure compliance with health and safety regulations.

Short Descr	GAS/LIQUID CHROMATOGRAPHY
Medium Descr	CHROMATOGRAPHY QUAL COLUMN ANALYTE NES
Long Descr	Chromatography, qualitative; column (eg, gas liquid or HPLC), analyte not elsewhere specified
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	Items and Services Packaged into APC Rates
Type of Service (TOS)	5 - Diagnostic Laboratory
Berenson-Eggers TOS (BETOS)	T1H - Lab tests - other (non-Medicare fee schedule)
MUE	Not applicable/unspecified.
CCS Clinical Classification	233 - Laboratory - Chemistry and Hematology