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Official Description

Ethylene glycol

© Copyright 2026 American Medical Association. All rights reserved.

Common Language Description

The CPT® Code 82693 refers to a laboratory test specifically designed to measure the levels of ethylene glycol in the blood. Ethylene glycol is a colorless, odorless organic compound that is primarily utilized as an antifreeze agent in automotive applications. Due to its toxic nature, even minimal exposure or ingestion of ethylene glycol can lead to severe health complications, including damage to vital organs such as the brain, liver, kidneys, and lungs. The ingestion of ethylene glycol can disrupt normal body chemistry, resulting in a condition known as metabolic acidosis, which can further progress to shock, organ failure, or even death if not promptly addressed. This blood test is crucial in clinical settings when there is a suspicion or confirmation of ethylene glycol poisoning, whether accidental or intentional. To conduct the test, a blood sample is collected through a procedure known as venipuncture, which is reported separately. The analysis of the blood sample is performed using a quantitative enzymatic assay, allowing for precise measurement of ethylene glycol levels in serum or plasma.

© Copyright 2026 Coding Ahead. All rights reserved.

1. Indications

The ethylene glycol blood test (CPT® Code 82693) is indicated in specific clinical scenarios where there is a concern for ethylene glycol exposure. The following conditions warrant the performance of this test:

  • Suspected Poisoning: The test is performed when there is a known or suspected case of accidental or intentional poisoning by ethylene glycol.
  • Symptoms of Toxicity: Patients presenting with symptoms consistent with ethylene glycol toxicity, such as metabolic acidosis, altered mental status, or organ dysfunction, may require this test for diagnosis.
  • Monitoring Treatment: The test may also be utilized to monitor the levels of ethylene glycol in patients undergoing treatment for poisoning, ensuring effective management of the condition.

2. Procedure

The procedure for conducting the ethylene glycol blood test involves several key steps that ensure accurate measurement of the compound in the blood. The following procedural steps are outlined:

  • Step 1: Patient Preparation Before the blood draw, the patient may be asked to provide a medical history, including any potential exposure to ethylene glycol, and to report any symptoms they may be experiencing. This information is crucial for interpreting the test results accurately.
  • Step 2: Venipuncture A qualified healthcare professional performs venipuncture to obtain a blood sample. This involves using a sterile needle to access a vein, typically in the arm, and collecting the blood into a designated collection tube. The venipuncture procedure is reported separately from the ethylene glycol test.
  • Step 3: Sample Processing Once the blood sample is collected, it is processed to separate the serum or plasma from the cellular components. This step is essential for accurate testing, as the ethylene glycol levels are measured in the liquid portion of the blood.
  • Step 4: Quantitative Enzymatic Assay The serum or plasma is then subjected to a quantitative enzymatic assay, which is a laboratory technique that quantitatively measures the concentration of ethylene glycol in the sample. This assay provides precise results that are critical for diagnosing and managing ethylene glycol poisoning.

3. Post-Procedure

After the blood sample has been collected and processed, the patient may experience minimal discomfort at the venipuncture site, which typically resolves quickly. There are no specific post-procedure care instructions related to the ethylene glycol test itself; however, it is essential for healthcare providers to monitor the patient for any signs of toxicity or complications related to ethylene glycol exposure. The results of the test will guide further clinical management, including potential treatments for poisoning, such as the administration of antidotes or supportive care as needed.

Short Descr ASSAY OF ETHYLENE GLYCOL
Medium Descr ASSAY OF ETHYLENE GLYCOL
Long Descr Ethylene glycol
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 2
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.
Date
Action
Notes
2013-01-01 Changed Medium Descriptor changed.
1993-01-01 Added First appearance in code book in 1993.
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Description
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