2025 CPT code 84244
(Active) Effective Date: N/A Revision Date: N/A Laboratory - Chemistry Procedures Pathology and Laboratory Procedures Feed
This test measures the level of renin in a patient's blood sample (plasma).
Modifiers may be applicable based on the circumstances of service, such as modifier 90 (Reference Laboratory), 91 (Repeat test), or 59 (Distinct procedural service). Refer to the CPT manual for specific guidelines on modifier usage.
Medical necessity for a renin test is established when the physician orders it to investigate hypertension, hypokalemia, or suspected aldosteronism, or to assess the function of the renin-angiotensin-aldosterone system in the context of a relevant clinical picture.The test aids in differentiating primary from secondary forms of aldosteronism and guiding appropriate management.
The clinical responsibility lies with the laboratory analyst who performs the test, analyzes the results, and reports them to the ordering physician.
In simple words: The lab performs a blood test to check the amount of renin in your blood. Renin is a substance that helps control blood pressure. This test helps doctors diagnose problems with your blood pressure or adrenal glands.
This laboratory procedure, CPT code 84244, involves the quantitative measurement of renin levels in a patient's plasma sample.Renin is an enzyme produced by the kidneys that plays a crucial role in regulating blood pressure by influencing the production of aldosterone. The test may be performed using various methods, including radioimmunoassay, which employs antibody-antigen reactions with radioactive labels for quantification using instruments like gamma counters.Clinicians may order this test to assist in diagnosing conditions like primary and secondary aldosteronism, characterized by aldosterone overproduction and hypertension.Results are often interpreted in conjunction with other tests, such as aldosterone and potassium level measurements.
Example 1: A patient presents with hypertension unresponsive to standard treatment.The physician orders a renin test to evaluate for primary aldosteronism, a condition where the adrenal glands produce excessive aldosterone, leading to high blood pressure., A patient with suspected secondary aldosteronism (high aldosterone due to kidney disease or other underlying conditions) undergoes a renin test to assess the renin-angiotensin-aldosterone system's function., A patient with unexplained hypokalemia (low potassium levels) is assessed.A renin test is ordered along with aldosterone levels to investigate a potential underlying adrenal disorder or kidney issue.
* Patient demographics and identifiers.* Physician's order specifying the renin test.* Date and time of sample collection.* Method used for renin assay.* Detailed laboratory results including units of measurement, reference ranges, and any flags.* Complete patient history and physical examination findings relevant to the test.* Any other relevant diagnostic data or investigations.
** Interpretation of renin levels must be done in conjunction with other clinical findings.The test result alone is not diagnostic.Consider using appropriate ICD-10 codes for diagnosis.
- Revenue Code: T1H
- Payment Status: Active
- Specialties:Endocrinology, Nephrology, Hypertension, Internal Medicine
- Place of Service:Office, Hospital, Laboratory