Summary & Overview
CPT 81512: Multianalyte Algorithmic Risk Score from Five Prenatal Markers
CPT code 81512 represents a laboratory multianalyte algorithmic analysis that integrates technical testing of five biochemical analytes (AFP, uE3, total and hyperglycosylated hCG, and DIA) with patient data to produce a reported risk score. This test is clinically significant for prenatal risk assessment and similar diagnostic contexts where combined biomarker algorithms inform patient risk stratification. Nationally, such molecular and algorithm-based laboratory services are increasingly important as precision diagnostics expand and payers refine coverage and coding policies.
Key payers addressed in the analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical context for the assay, typical sites of service, and the core components of the billed service. The publication also covers payer coverage considerations and benchmarking where available, summarizes relevant policy updates affecting algorithmic and multianalyte lab tests, and provides operational and billing context for laboratories and billing staff. Clinical implications of reporting a risk score and the role of combined biochemical markers are explained to support interpretation of the code's clinical use. Data not available in the input for associated taxonomies, ICD-10 diagnoses, related codes, and specific service line are noted as unavailable.
Billing Code Overview
CPT code 81512 describes a laboratory service in which the lab analyst performs technical testing for five analytes — alpha-fetoprotein (AFP), unconjugated estriol (uE3), total and hyperglycosylated human chorionic gonadotropin (hCG), and dimeric inhibin A (DIA) — then applies an algorithmic analysis that combines those test results with patient data to generate and report a patient risk score.
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Service type: Laboratory-based multianalyte algorithmic analysis combining multiple biochemical markers with clinical data to produce a risk score.
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Typical site of service: Clinical laboratory or hospital laboratory performing complex biochemical testing and computational analysis.
Data not available in the input for associated taxonomies, ICD-10 diagnoses, related codes, and service line.
Clinical & Coding Specifications
Clinical Context
A pregnant patient presents for second-trimester aneuploidy and adverse outcome risk assessment. The laboratory performs maternal serum biomarker testing including alpha-fetoprotein (AFP), unconjugated estriol (uE3), total and hyperglycosylated human chorionic gonadotropin (hCG), and dimeric inhibin A (DIA). Patient demographic and clinical data (gestational age, maternal age, weight, prior obstetric history, and smoking status) are entered into an algorithmic risk-analysis platform. The lab analyst runs the five analyte assays, integrates results with patient variables, and generates a patient-specific risk score for neural tube defects, trisomy 21, trisomy 18, and related pregnancy complications. Results are validated, a final report with the calculated risk score is sent electronically to the ordering obstetrician or maternal-fetal medicine specialist, and documented in the patient chart. Typical workflow steps: collection of maternal blood in an outpatient prenatal clinic or laboratory phlebotomy site; sample transport to a clinical chemistry/laboratory facility; performance of immunoassays and QC; algorithmic analysis to derive the multi-marker risk score; review by laboratory personnel; release of report to the ordering provider and incorporation into prenatal care planning. Typical site of service: outpatient laboratory or hospital clinical laboratory. Service type: clinical laboratory multianalyte algorithmic analysis with report of patient risk score (laboratory analytics/diagnostic testing).
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 | Professional component |