CPT® Code 84140 is used to report quantitative measurement of pregnenolone, a precursor hormone in the steroidogenesis pathway. Pregnenolone plays a key role in the production of cortisol, progesterone, estrogen, testosterone, and DHEA, making it clinically relevant in evaluating hormonal balance and adrenal function.
This code represents the laboratory assay only, not specimen collection or interpretation services, which may be reported separately when appropriate.
Key Facts About CPT® 84140
- Service type: Laboratory test
- Test: Pregnenolone (quantitative)
- Specimen type: Typically serum or plasma
- Test purpose: Evaluate hormone production pathways and adrenal function
- Provider type: Laboratories, physicians, and qualified healthcare professionals
Common clinical indications:
- Evaluation of adrenal function and steroid hormone pathways
- Assessment of hormonal imbalances
- Investigation of fatigue, stress-related disorders, or endocrine dysfunction
- Functional and integrative medicine hormone panels
- Monitoring hormone-related treatment protocols
When to Use CPT® 84140
CPT 84140 is appropriate when:
- Measuring pregnenolone levels to assess upstream hormone production
- Evaluating suspected adrenal or endocrine dysfunction
- Investigating symptoms related to hormonal imbalance
- Monitoring patients undergoing hormone-related therapies
Examples:
- Assessing pregnenolone levels in a patient with chronic fatigue and suspected adrenal dysfunction
- Including pregnenolone in a comprehensive hormone panel
- Monitoring changes in steroid hormone pathways during treatment
- Evaluating unexplained endocrine symptoms in an integrative care setting
Documentation Requirements
To support CPT 84140 billing, documentation should include:
- Patient identifiers and date of service
- Clinical indication for testing
- Specimen type (e.g., serum, plasma)
- Test performed (pregnenolone measurement)
- Test result and date reported
- Ordering provider information
Clear documentation supports medical necessity, accurate billing, and continuity of care.
Reimbursement and Coding Considerations
- CPT 84140 is generally covered when medically necessary, though coverage may vary
- Diagnosis coding should support endocrine or hormonal evaluation
- Specimen collection may be billed separately if allowed
- Often performed alongside other hormone tests (e.g., cortisol, DHEA, progesterone)
- Some payers may consider this test specialized and apply additional review or limitations
Always verify payer-specific laboratory billing requirements.
How OptiMantra Supports Hormone Testing
OptiMantra’s integrated EMR and practice management system streamlines documentation and billing for CPT 84140:
With OptiMantra, providers can:
- Order hormone testing panels within the patient chart
- Track pregnenolone and related hormone levels over time
- Link lab data to symptoms, diagnoses, and treatment plans
- Maintain organized laboratory documentation that supports billing compliance and audit preparedness
- Integrate functional and conventional lab workflows seamlessly
By centralizing hormone testing workflows, OptiMantra helps practices improve efficiency, ensure compliance, and optimize reimbursement.
Try OptiMantra for free here!
Disclaimer: CPT® codes are maintained by the American Medical Association. This guide is for informational purposes only and does not replace official coding guidelines or payer policies.
.png)
