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The CPT® Code 84260 refers to a laboratory test that measures the levels of serotonin in the blood. Serotonin is a type of monoamine neurotransmitter that is synthesized from the amino acid tryptophan. The majority of serotonin is produced in the intestines, where it plays a crucial role in regulating gastrointestinal motility. Once produced, serotonin is released from intestinal cells into the bloodstream, where it is primarily carried by platelets. This transport mechanism is significant as serotonin contributes to the regulation of hemostasis, which is the process that prevents and stops bleeding, thereby aiding in blood clotting. Additionally, a smaller quantity of serotonin is produced in the central nervous system (CNS), where it is involved in various physiological functions, including the regulation of mood, appetite, and sleep patterns. Elevated serotonin levels in the blood can be indicative of several medical conditions, including intestinal obstruction, metastatic abdominal cancer, myocardial infarction (heart attack), cystic fibrosis, dumping syndrome, and non-tropical sprue. It is important to note that certain medications can influence serotonin levels if taken within 72 hours prior to the blood test. These medications include lithium, monoamine oxidase (MAO) inhibitors, methyldopa, morphine, and reserpine, which may lead to altered test results. The blood sample for this test is obtained through a procedure known as venipuncture, which is separately reportable. The analysis of serotonin levels is conducted using a method called quantitative high-performance liquid chromatography, which allows for precise measurement of serotonin concentration in either whole blood or serum.
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The serotonin blood test (CPT® Code 84260) is indicated for the evaluation of various medical conditions that may be associated with abnormal serotonin levels. The following conditions and symptoms may warrant the performance of this test:
The procedure for measuring serotonin levels involves several key steps that ensure accurate results. First, a qualified healthcare professional will perform a venipuncture, which is the process of puncturing a vein to obtain a blood sample. This step is crucial as it allows for the collection of either whole blood or serum, which is necessary for the subsequent analysis. The blood sample is then collected into a suitable container, typically a tube that is designed to preserve the integrity of the sample. Once the blood sample is obtained, it is sent to a laboratory where it undergoes testing using quantitative high-performance liquid chromatography (HPLC). This sophisticated analytical technique separates and quantifies the serotonin present in the sample, providing precise measurements of serotonin levels. The use of HPLC is essential for ensuring the accuracy and reliability of the test results, as it allows for the detection of even small variations in serotonin concentration. Throughout the process, proper handling and storage of the blood sample are critical to prevent degradation and ensure that the results reflect the patient's true serotonin levels.
After the blood sample has been collected for the serotonin test, there are generally no specific post-procedure care requirements for the patient. However, it is advisable for patients to follow any instructions provided by the healthcare professional regarding activity levels or medication use, especially if they have taken medications that may affect serotonin levels within the 72 hours prior to the test. Patients may experience minor discomfort or bruising at the venipuncture site, which typically resolves on its own. It is important for patients to report any unusual symptoms or prolonged discomfort to their healthcare provider. Once the test results are available, the healthcare provider will discuss the findings with the patient and determine any necessary follow-up actions based on the results.
| Short Descr | ASSAY OF SEROTONIN | Medium Descr | ASSAY OF SEROTONIN | Long Descr | Serotonin | 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 | 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 | 1 | 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. | GZ | Item or service expected to be denied as not reasonable and necessary | 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 | 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 | Q1 | Routine clinical service provided in a clinical research study that is in an approved clinical research study |
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| 2013-01-01 | Changed | Medium Descriptor changed. |
| Pre-1990 | Added | Code added. |
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