Summary & Overview
CPT 81428: Cytogenomic Microarray Analysis for Copy Number Variants
CPT code 81428 represents cytogenomic constitutional (genome-wide) microarray analysis, a critical genetic testing procedure used to detect copy number variants across the genome. This advanced laboratory test is instrumental in diagnosing chromosomal abnormalities, including conditions such as Down syndrome, Edwards syndrome, and other unspecified chromosomal deletions and trisomies. The procedure is performed in specialized laboratory settings and is relevant across multiple clinical disciplines, including clinical genetics, pathology, family medicine, internal medicine, and obstetrics & gynecology.
Blue Cross Blue Shield is a key payer covered in this analysis, reflecting the importance of understanding payer policies and coverage for genetic testing services. Readers will gain insights into the clinical context of 81428, including its role in patient care, associated diagnoses, and related CPT codes. The publication also addresses common billing modifiers and taxonomies, providing a comprehensive overview for stakeholders interested in medical billing, coding, and policy updates. Benchmarks and policy developments related to genetic testing are highlighted, offering valuable information for healthcare professionals, administrators, and policy analysts.
This summary provides a national perspective on the utilization and coverage of 81428, equipping readers with essential knowledge for navigating the evolving landscape of genetic testing and medical billing.
CPT Code Overview
CPT code 81428 is used for cytogenomic constitutional (genome-wide) microarray analysis, specifically for the interrogation of genomic regions to identify copy number variants. This procedure utilizes technologies such as bacterial artificial chromosome (BAC) or oligonucleotide-based comparative genomic hybridization (CGH) microarray analysis. The service type is genetic testing, and it is typically performed in a laboratory setting, designated as Place of Service (POS) 81. This code is essential for comprehensive genetic evaluation, aiding in the detection of chromosomal abnormalities and contributing to clinical decision-making in various medical specialties.
Clinical & Coding Specifications
Clinical Context
A newborn presents with multiple congenital anomalies, including developmental delay and dysmorphic features. The pediatrician suspects a chromosomal abnormality and orders cytogenomic constitutional (genome-wide) microarray analysis (CPT 81428) to detect copy number variants that may explain the clinical presentation. The specimen is sent to a laboratory (Place of Service 81), where a clinical geneticist or pathologist interprets the results. The workflow involves specimen collection, laboratory processing, and professional interpretation, often involving collaboration between genetics, pathology, and primary care specialties.
Coding Specifications
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Modifiers:
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26: Used when billing for the professional component (interpretation and report) of the procedure. - Modifier
TC: Used when billing for the technical component (laboratory processing and analysis) of the procedure.
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Provider Taxonomies:
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