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The CPT® Code 84430 refers to the laboratory test for measuring thiocyanate levels in blood or urine. Thiocyanate, also known as rhodanide, plays a crucial role in the human host defense system. It is produced during the metabolism of the amino acid cysteine and is involved in the detoxification process of cyanide, a potentially harmful substance. The measurement of thiocyanate levels is significant as elevated levels can indicate exposure to certain environmental factors, such as tobacco use or inhalation of environmental smoke. Additionally, patients receiving the medication nitroprusside may also exhibit increased thiocyanate levels. Conversely, decreased levels of thiocyanate can be observed in individuals suffering from specific diseases, such as cystic fibrosis. The test requires a blood sample, which is obtained through a separately reportable venipuncture procedure, or a urine sample, which can be collected either as a random void or through a 24-hour specimen collection. The analysis of serum, plasma, and urine samples is conducted using quantitative colorimetry, a method that allows for precise measurement of thiocyanate concentrations.
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The thiocyanate test (CPT® Code 84430) is indicated for the following conditions:
The procedure for measuring thiocyanate levels involves several key steps:
After the thiocyanate test is completed, the samples are processed, and results are typically available within a specified timeframe, depending on the laboratory's protocols. Patients may be advised to follow up with their healthcare provider to discuss the results and any necessary further actions. There are generally no specific post-procedure care requirements for patients after blood or urine collection, but they should be informed about any potential side effects from the venipuncture, such as bruising or discomfort at the site of blood draw. Additionally, healthcare providers may consider the clinical context of the thiocyanate levels when planning further diagnostic or therapeutic interventions.
| Short Descr | ASSAY OF THIOCYANATE | Medium Descr | ASSAY OF THIOCYANATE | Long Descr | Thiocyanate | 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. | GA | Waiver of liability statement issued as required by payer policy, individual case | QW | Clia waived test |
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| 2013-01-01 | Changed | Medium Descriptor changed. |
| Pre-1990 | Added | Code added. |
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