How To Use CPT Code 84590

CPT 84590 describes the measurement of vitamin A levels in patient blood. This article will cover the description, procedure, qualifying circumstances, appropriate usage, documentation requirements, billing guidelines, historical information, similar codes and billing examples.

1. What is CPT Code 84590?

CPT 84590 can be used to measure the amount of vitamin A in patient blood. This test is typically ordered by clinicians to evaluate patients for decreased or increased levels of vitamin A, which can cause various health issues. The test may involve mixing the patient’s blood with specific substances and using methods such as chromatography to analyze the vitamin A levels.

2. Official Description

The official description of CPT code 84590 is: ‘Vitamin A measurement.’

3. Procedure

1. The lab analyst performs the technical steps to mix the patient’s blood with specific substances to measure vitamin A levels.
2. The test may use methods such as chromatography to separate and analyze the vitamin A in the patient’s blood.

4. Qualifying circumstances

CPT 84590 can be used for patients who need to have their vitamin A levels evaluated. This test is ordered by clinicians to assess patients for decreased or increased levels of vitamin A, which can impact their eye health, skin health, and immune reactions.

5. When to use CPT code 84590

CPT code 84590 should be used when a clinician orders a vitamin A measurement test to evaluate a patient’s vitamin A levels. It is important to use this code when the specific measurement of vitamin A is required, rather than using codes for other vitamins.

6. Documentation requirements

To support a claim for CPT 84590, the clinician must document the following information:

• Reason for ordering the vitamin A measurement test
• Details of the test performed, including the substances used and the method of analysis
• Date and time of the test
• Results of the vitamin A measurement
• Signature of the clinician ordering the test

7. Billing guidelines

When billing for CPT 84590, ensure that the test performed is specifically for measuring vitamin A levels in patient blood. It is important to use this code when reporting the vitamin A measurement test and not to report it with codes for other vitamins. Additionally, some payers may separately reimburse for the collection of the blood specimen using a venipuncture code.

8. Historical information

CPT 84590 was added to the Current Procedural Terminology system on January 1, 1990. There have been no updates to the code since its addition.

9. Examples

1. A clinician orders a vitamin A measurement test for a patient with suspected vitamin A deficiency.
2. A patient with symptoms of vitamin A toxicity undergoes a vitamin A measurement test to assess their vitamin A levels.
3. A clinician orders a vitamin A measurement test for a patient with night blindness to evaluate their vitamin A levels.
4. A patient with a history of vitamin A supplementation undergoes a vitamin A measurement test to monitor their vitamin A levels.
5. A clinician orders a vitamin A measurement test for a patient with skin issues to assess their vitamin A levels.
6. A patient with a compromised immune system undergoes a vitamin A measurement test to evaluate their vitamin A levels.
7. A clinician orders a vitamin A measurement test for a patient with dietary restrictions to assess their vitamin A levels.
8. A patient with a family history of vitamin A deficiency undergoes a vitamin A measurement test to evaluate their vitamin A levels.
9. A clinician orders a vitamin A measurement test for a patient with symptoms of vitamin A deficiency to assess their vitamin A levels.
10. A patient with a history of liver disease undergoes a vitamin A measurement test to monitor their vitamin A levels.