Summary & Overview

CPT 0209U: Genome-wide CNV and Structural Variation Analysis (CNGnome™)

Headline: CPT code 0209U: Genome-wide CNV and structural variation analysis (CNGnome™)

Lead: CPT code 0209U represents a Proprietary Laboratory Analyses (PLA) test — the CNGnome™ assay from PerkinElmer Genomics — that evaluates the entire genome for copy number variants and other chromosomal abnormalities. The code standardizes billing for a single manufacturer-specific genomic test with implications for diagnostic workflows and payer coverage decisions nationwide.

What this code represents and why it matters: CPT code 0209U designates a single-vendor, high-complexity genomic assay focused on genome-wide CNV detection and structural variant characterization. Genome-wide CNV testing can inform diagnosis for developmental disorders, congenital anomalies, and other conditions tied to chromosomal imbalance, making coverage and coding clarity important for clinical genetics and specialty laboratories.

Key payers covered: The analysis addresses national payers including Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare.

What readers will learn: The publication provides benchmarks and contextual information on clinical use, coding interpretation for a PLA test, and payer coverage considerations. Readers will find a concise description of the test’s clinical purpose, typical laboratory setting, and the role of CPT PLA coding in distinguishing vendor-specific assays. Data not available in the input are noted where applicable.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicare0209UCPTProprietary Laboratory Analysesgenomic testingcopy number variantstructural variationclinical geneticslaboratory

Billing Code Overview

CPT code 0209U is a Proprietary Laboratory Analyses (PLA) code that describes the CNGnome™ test by PerkinElmer Genomics. The test evaluates a patient’s entire genome for copy number variants (CNVs) and other chromosomal markers of abnormality, including structural changes and regions of homozygosity.

Service Type: Comprehensive genomic analysis for copy number and structural variation

Typical Site of Service: Clinical diagnostic laboratory

Clinical & Coding Specifications

Clinical Context

A pediatric or adult patient with unexplained developmental delay, intellectual disability, congenital anomalies, multiple congenital malformations, autistic features, or suspected chromosomal disorder is referred for comprehensive genomic copy number analysis. The ordering clinician (often a medical geneticist, pediatrician, neurologist, or maternal–fetal medicine specialist) documents the clinical indications and obtains informed consent for genome‑wide copy number variant analysis. A blood sample (or other validated specimen such as saliva or tissue when indicated) is collected at an outpatient clinic, hospital, or prenatal diagnostic center and sent to the PerkinElmer Genomics laboratory.

The laboratory performs the CNGnome™ test (0209U) to evaluate genome‑wide copy number variants, structural chromosomal abnormalities, and regions of homozygosity. The testing workflow includes specimen accessioning, DNA extraction, quality control, genome analysis using proprietary platforms and bioinformatics, variant interpretation by laboratory molecular geneticists, and a finalized report returned to the ordering clinician. Results inform diagnosis, management, recurrence risk counseling, and may guide further targeted testing or referral to genetic counseling. Typical sites of service include outpatient clinics, inpatient hospital wards, prenatal diagnostic centers, and reference laboratory facilities.

Coding Specifications

Modifier	Description	When to Use
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Taxonomy Code	Specialty	Notes
207Q00000X	Clinical Genetics	Medical geneticists who interpret genomic testing and provide diagnostic consultation.
207RC0000X	Clinical Molecular Genetics	Laboratory specialists responsible for molecular test interpretation and reporting.
2080P0208X	Pediatric Neurology	Pediatric neurologists who refer patients with developmental delay and seizures.
2084P0800X	Maternal-Fetal Medicine	Specialists who order genomic testing for prenatal structural anomalies.
207L00000X	Pathology	Molecular pathology and clinical laboratory directors overseeing test validation and quality control.

CPT Code	Description	Relationship to This Procedure
`81211`	Chromosomal microarray analysis; prenatal or postnatal diagnosis (genome‑wide)	Alternative or complementary genome‑wide copy number testing; may be ordered instead of or prior to `0209U` depending on lab methodology.
`81479`	Unlisted molecular pathology procedure	Used when a specific proprietary test has no PLA code available; sometimes used historically for novel genomic assays prior to PLA assignment.
`88271`	Cytogenomic microarray; reporting only (interpretation)	Billing for interpretation/reporting of array results when separate from technical processing; can be used in conjunction with technical component billing.
`88233`	Microarray; number not present (note: example of cytogenetic test codes)	Performed alongside genome‑wide CNV testing for confirmatory or complementary cytogenetic analysis.
`88260`	Chromosome analysis, peripheral blood; complete karyotype	Conventional cytogenetics performed before or after genomic CNV testing to detect balanced rearrangements not detected by copy number analysis.

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