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The water load test, designated by CPT® Code 89235, is a diagnostic procedure utilized to assess the body's ability to manage fluid balance. During this test, the patient is required to ingest a specific volume of water, calculated at 20-25 milliliters per kilogram of their body weight. This ingestion of water serves to challenge the kidneys' ability to excrete excess fluid. Following the water intake, urine output is meticulously measured to evaluate how effectively the body is processing and eliminating the ingested fluid. A key focus of this test is to identify conditions such as inappropriate antidiuretic hormone (ADH) syndrome, where the body may retain water excessively, leading to potential complications. The results of the water load test can provide critical insights into the patient's renal function and fluid regulation mechanisms, aiding healthcare professionals in diagnosing and managing various medical conditions related to fluid imbalance.
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The water load test is indicated for patients who exhibit symptoms or conditions that may suggest issues with fluid retention or regulation. The following are specific indications for performing this test:
The water load test involves several critical procedural steps to ensure accurate results. The following outlines the procedure in detail:
After the completion of the water load test, the patient may be monitored for any immediate reactions or complications. It is important to assess the patient's overall condition and ensure they are stable. The results of the test will be reviewed, and further diagnostic or therapeutic steps may be recommended based on the findings. Patients should be informed about any follow-up appointments or additional tests that may be necessary to address the underlying conditions identified during the water load test.
| Short Descr | WATER LOAD TEST | Medium Descr | WATER LOAD | Long Descr | Water load test | 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 | Service Paid under Fee Schedule or Payment System other than OPPS | Type of Service (TOS) | 5 - Diagnostic Laboratory | Berenson-Eggers TOS (BETOS) | none | MUE | Not applicable/unspecified. | CCS Clinical Classification | 235 - Other Laboratory |
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| 2011-01-01 | Deleted | Deleted |
| 2004-01-01 | Added | Code added. |
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