Summary & Overview
CPT 0181U: Navigator CO Sequencing for Colton Blood Group Antigens
CPT code 0181U is a Proprietary Laboratory Analyses (PLA) code for the Navigator CO Sequencing test from Grifols Immunohematology Center that sequences genes related to Colton (CO) blood group antigens. This molecular assay identifies antigen status to help clinicians reduce the risk of transfusion, transplant, and peripartum incompatibility reactions. As a PLA code, 0181U applies to a single manufacturer’s test and is specific to the Grifols product, which has implications for coverage, coding clarity, and payer contracting.
Key payers in typical national coverage discussions include Aetna, Blue Cross Blue Shield plans, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of clinical context for antigen genotyping, how a PLA code may affect coding and billing workflows, and what to expect in payer discussions. The publication summarizes benchmark considerations, relevant policy themes for proprietary tests (including single-source coding and laboratory reporting), and clinical circumstances where CO antigen determination is relevant, such as transfusion planning, organ transplant compatibility assessment, and management in pregnancy and newborns.
Data not available in the input: specific payer coverage policies, associated ICD-10 codes, related billing codes, and detailed taxonomies. The report focuses on national implications and practical coding context for CPT code 0181U.
Billing Code Overview
CPT code 0181U is a Proprietary Laboratory Analyses (PLA) code for the Navigator CO Sequencing test from Grifols Immunohematology Center. The test analyzes specific gene sequences associated with the Colton (CO) blood group antigens to identify antigen status. Results can inform clinical decisions to minimize adverse blood–type incompatibility reactions in blood transfusions, organ transplants, and in pregnancy and newborn care.
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Service type: Molecular genetic sequencing assay targeting Colton blood group antigen determination
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Typical site of service: Clinical laboratory or reference laboratory using a blood specimen
Clinical & Coding Specifications
Clinical Context
A transfusion medicine specialist or immunohematology laboratory receives a blood specimen from a pregnant woman with a history of alloimmunization or from a patient scheduled for blood transfusion or organ transplant. The clinician orders the Navigator CO Sequencing test to determine Colton blood group antigen genotype by sequencing the specific gene regions identified by Grifols Immunohematology Center. The laboratory performs DNA extraction from the blood specimen, runs the proprietary sequencing assay, and generates a report indicating Colton (CO) antigen genotype (e.g., CO01, CO02, or variant alleles). Results are used by transfusion medicine physicians, obstetricians, neonatologists, or transplant teams to guide selection of antigen-compatible donor blood, manage hemolytic disease of the fetus and newborn risk, and reduce risk of transfusion or transplant incompatibility. Typical workflow steps: order entry by clinician, specimen collection and shipment to the performing laboratory, receipt and accessioning, DNA-based sequencing assay run under the proprietary PLA method, result interpretation and report distribution to the ordering clinician, and documentation in the patient record prior to transfusion or transplant planning.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 | Professional component | When billing separate professional interpretation for the test if split billing applies |