Summary & Overview
CPT 81408: Advanced Molecular Pathology Laboratory Procedure
CPT code 81408 is a high-level molecular pathology procedure used in laboratory settings to analyze complex genetic and chromosomal anomalies. As a Tier 2, Level 9 code, it covers advanced molecular testing that plays a critical role in diagnosing rare genetic conditions and assessing susceptibility to certain diseases, including cancer and metabolic disorders. The code is widely recognized across major national payers, including Aetna, Blue Cross Blue Shield, Cigna Health, and UnitedHealthcare, reflecting its importance in clinical diagnostics and laboratory medicine.
This publication provides a comprehensive overview of CPT 81408, including payer coverage, clinical context, and related billing practices. Readers will gain insights into the code's clinical applications, typical laboratory settings, and its relationship to other molecular pathology codes. The summary also highlights relevant modifiers and associated taxonomies, offering a clear understanding of how this code fits within broader molecular genetic testing workflows. Policy updates and benchmarks are discussed to inform stakeholders about current trends and requirements in molecular pathology billing and reimbursement.
CPT Code Overview
CPT 81408 represents Tier 2 Molecular Pathology Procedures, Level 9. This code is used for advanced molecular laboratory testing, typically performed in specialized laboratory settings. The service type is Molecular Pathology / Laboratory, and the typical site of service is Laboratory (POS 81). These procedures are essential for identifying genetic and chromosomal anomalies, supporting clinical decision-making in complex cases.
Clinical & Coding Specifications
Clinical Context
A patient is referred for advanced molecular genetic testing due to suspicion of a rare genetic disorder, unexplained metabolic abnormalities, or screening for genetic susceptibility to cancer. The ordering provider may be a specialist in medical genetics, pathology, or internal medicine. The specimen is collected and sent to a laboratory (Place of Service 81), where Tier 2 molecular pathology procedures at Level 9 are performed. The laboratory analyzes the genetic material to identify mutations or chromosomal anomalies, which assists in diagnosis, prognosis, or management of the patient's condition. Results are interpreted by a molecular genetic pathologist and reported back to the ordering provider.
Coding Specifications
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Modifiers:
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26: Used when reporting only the professional component (interpretation of results) of the laboratory service. - Modifier
TC: Used when reporting only the technical component (performance of the test) of the laboratory service. - Modifier
91: Used when the laboratory test is repeated on the same patient for clinical reasons.
- Modifier
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Provider Taxonomies:
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