Summary & Overview
CPT 82530: Quantitative Free Cortisol Measurement
CPT code 82530 denotes a quantitative laboratory measurement of free (unbound) cortisol in a patient specimen, used to evaluate adrenal gland function and disorders of cortisol production. Nationally, this test supports diagnosis and management of endocrine conditions such as Cushing syndrome, adrenal insufficiency, and other disorders that alter cortisol dynamics. Its role in clinical pathways and utilization in outpatient and inpatient settings makes reimbursement and coding clarity important for laboratories and clinicians.
Key payers covered in this overview include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise explanation of clinical context and expected sites of service, plus an outline of what stakeholders typically review when assessing coverage and billing for this code: utilization benchmarks, payer coverage patterns, technical versus professional components, and common coding modifiers used in related lab services. This publication summarizes the code’s clinical purpose, typical laboratory workflow implications, and what to expect in payer interactions. Data not available in the input will be noted where applicable.
Billing Code Overview
CPT code 82530 measures the amount of free cortisol in a patient specimen. Cortisol is a steroid hormone produced by the adrenal glands; this laboratory test quantifies unbound cortisol levels to assess adrenal function and related endocrine conditions.
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Service type: Clinical laboratory test — quantitative free cortisol measurement
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Typical site of service: Hospital laboratory, independent clinical laboratory, or outpatient laboratory collection site
Clinical & Coding Specifications
Clinical Context
A 42-year-old patient presents to the outpatient endocrinology clinic with progressive fatigue, unexplained weight loss, orthostatic dizziness, and hyperpigmentation. The clinician suspects primary adrenal insufficiency and orders a laboratory measurement of free cortisol from a serum or urine specimen to evaluate baseline adrenal function and assess the need for dynamic testing. The patient has a morning blood draw (typically 8 AM) performed in the clinic phlebotomy area; the specimen is sent to the hospital core laboratory where a medical laboratory scientist performs the assay, documents specimen integrity, runs appropriate controls, and reports the quantitative free cortisol result to the ordering provider. Results inform diagnosis, guide initiation or adjustment of hydrocortisone replacement, or trigger further testing such as ACTH stimulation testing.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 | Professional component | Use when billing only the physician or laboratory professional interpretation component separate from technical processing. |
52 | Reduced services | Use if the assay was partially performed or truncated and a reduced service applies. |