Summary & Overview
CPT 84403: Laboratory Measurement of Total Testosterone
CPT code 84403: Testosterone; total is a widely utilized laboratory test for measuring total testosterone levels in blood samples. This procedure is integral to the diagnosis and management of endocrine and reproductive disorders, including testicular dysfunction and other hormonal imbalances. The code is classified under chemistry procedures and is most frequently performed in independent laboratory settings.
Major national payers such as Aetna, Blue Cross Blue Shield, Cigna Health, and UnitedHealthcare provide coverage for this service, reflecting its clinical importance and broad applicability. The publication offers a comprehensive overview of payer coverage, relevant clinical indications, and associated billing practices. Readers will gain insights into common modifiers, applicable provider taxonomies, and related CPT codes, as well as the ICD-10 diagnoses most often linked to this test.
This summary provides a clear understanding of the clinical context, payer landscape, and coding considerations for CPT code 84403. It is designed to inform healthcare professionals, laboratory administrators, and policy analysts about current benchmarks and policy updates relevant to testosterone testing.
CPT Code Overview
CPT code 84403 is used to report the laboratory measurement of total testosterone levels in a patient's blood. This procedure falls under chemistry procedures and is commonly performed in an independent laboratory setting, designated as Place of Service 81. The test is essential for evaluating hormonal status and diagnosing various endocrine and reproductive disorders. Accurate assessment of total testosterone is critical for clinical decision-making in both male and female patients.
Clinical & Coding Specifications
Clinical Context
A patient presents to a primary care provider or endocrinologist with symptoms suggestive of hormonal imbalance, such as fatigue, decreased libido, or infertility. The provider orders a laboratory test to measure total testosterone levels using CPT code 84403. The specimen is typically collected in the provider's office and sent to an independent laboratory (Place of Service 81) for analysis. The laboratory performs the chemistry procedure and reports the results back to the provider, who interprets them in the context of the patient's clinical presentation and relevant diagnoses.
Coding Specifications
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Modifiers:
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Modifier
26: Indicates the professional component, used when the provider interprets the laboratory results but does not perform the technical portion of the test. -
Modifier
90: Used when the laboratory test is performed by a reference (outside) laboratory, not by the provider's own facility.
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Provider Taxonomies:
Taxonomy Code Specialty Name 291U00000XClinical Medical Laboratory 207Q00000XFamily Medicine Physician 207R00000XInternal Medicine Physician
Related Diagnoses
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E29.1- Testicular hypofunction- Relevant for patients with decreased testosterone production, which is directly assessed by CPT code
84403.
- Relevant for patients with decreased testosterone production, which is directly assessed by CPT code
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E29.8- Other testicular dysfunction- Used when the patient has testicular dysfunction not specified elsewhere, for which testosterone measurement is clinically indicated.
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E29.9- Testicular dysfunction, unspecified- Applies to cases where testicular dysfunction is suspected but not clearly defined; total testosterone testing helps clarify the diagnosis.
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E34.9- Endocrine disorder, unspecified- Used when an endocrine disorder is suspected but not specifically identified; testosterone testing is part of the workup.
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R79.89- Other specified abnormal findings of blood chemistry- Used when abnormal blood chemistry findings are present, and total testosterone measurement is part of further investigation.
Related CPT Codes
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84402- Testosterone; free- Measures the free (unbound) fraction of testosterone. Often ordered alongside
84403to provide a comprehensive assessment of testosterone status.
- Measures the free (unbound) fraction of testosterone. Often ordered alongside
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84153- Prostate specific antigen (PSA); total- Used in male patients to assess prostate health. May be ordered in conjunction with
84403when evaluating endocrine or urologic conditions.
- Used in male patients to assess prostate health. May be ordered in conjunction with
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80050- General health panel- A panel of tests for general health screening. Can include
84403as part of a broader assessment.
- A panel of tests for general health screening. Can include
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80053- Comprehensive metabolic panel- Assesses metabolic and organ function. May be ordered with
84403to evaluate overall health or rule out other causes of symptoms.
- Assesses metabolic and organ function. May be ordered with
Codes 84402 and 84403 are commonly used together for a full testosterone profile. Panels like 80050 and 80053 may include or be ordered alongside 84403 for broader clinical evaluation.
National Reimbursement Benchmarks
Nationally, the mean rate for CPT code 84403 among commercial payers (BUCA) is $25.33, which is higher than the typical Medicare rate for this code. Commercial payers such as Cigna and Aetna report the highest mean rates at $30.86 and $28.98, respectively, while UnitedHealth Group and Blue Cross Blue Shield are lower at $22.20 and $22.12.
Rate dispersion, measured by the difference between the 75th and 25th percentiles, varies significantly across payers. Cigna exhibits the widest spread ($21.87), indicating greater variability in reimbursement, while Blue Cross Blue Shield ($12.50) and UnitedHealth Group ($12.33) show tighter ranges. Aetna and BUCA fall in between, with dispersions of $12.00 and $12.98, respectively.
The table and chart below present a detailed breakdown of national mean rates and percentile values for each payer.
Trek Health ingests and normalizes Transparency in Coverage data and payer policy updates to give provider organizations a clear view of how commercial reimbursement behaves across markets, payers, and services. Our platform transforms raw payer disclosures into structured intelligence that supports contract evaluation, payer negotiations, and service line strategy. By combining market benchmarks with ongoing policy visibility, Trek helps teams identify variability, risk, and opportunity in commercial reimbursement. The result is faster insight, stronger negotiating positions, and more informed financial decisions.