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The CPT® Code 84588 refers to a laboratory test that measures the levels of arginine vasopressin, also known as antidiuretic hormone (ADH), in the blood. This hormone plays a crucial role in the regulation of water balance, glucose, and sodium levels within the bloodstream. Synthesized in the hypothalamus, ADH is stored in the posterior pituitary gland until it is released into the bloodstream in response to specific physiological conditions, particularly dehydration. When the body experiences a lack of water, ADH is secreted to prompt the kidneys to conserve water, thereby concentrating urine and reducing urine volume. Additionally, ADH contributes to the regulation of blood pressure by increasing peripheral vascular resistance through vasoconstriction, which can lead to elevated blood pressure levels. The test involves obtaining a blood sample through a procedure known as venipuncture, which is separately reportable. The plasma obtained from the blood sample is then analyzed using a quantitative radioimmunoassay method to determine the concentration of vasopressin present.
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The vasopressin (antidiuretic hormone, ADH) test, coded as CPT® 84588, is indicated for the evaluation of various clinical conditions related to fluid balance and hormonal regulation. The following are specific indications for performing this test:
The procedure for obtaining the vasopressin level involves several key steps that ensure accurate measurement of the hormone in the blood. The following outlines the procedural steps:
After the blood sample has been collected and processed, there are generally no specific post-procedure care requirements for the patient. However, it is advisable for the patient to remain hydrated and to monitor the venipuncture site for any signs of complications, such as excessive bleeding or bruising. The results of the vasopressin test will be interpreted by the healthcare provider in conjunction with the patient's clinical history and other laboratory findings to make informed decisions regarding diagnosis and treatment.
| Short Descr | ASSAY OF VASOPRESSIN | Medium Descr | ASSAY OF VASOPRESSIN ANTI-DIURETIC HORMONE | Long Descr | Vasopressin (antidiuretic hormone, ADH) | 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. | 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. | Q4 | Service for ordering/referring physician qualifies as a service exemption | QJ | Services/items provided to a prisoner or patient in state or local custody, however the state or local government, as applicable, meets the requirements in 42 cfr 411.4 (b) |
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| 2013-01-01 | Changed | Medium Descriptor changed. |
| Pre-1990 | Added | Code added. |
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