Summary & Overview
CPT 87154: Multiplex Molecular Identification from Cultured Blood
CPT code 87154 covers a multiplex molecular test performed on a previously cultured blood specimen or isolate that has been identified to genus and species, with further amplification and probe-based detection of at least six targets to determine organism type and resistance markers. This level of testing supports precise microbial identification and antimicrobial resistance characterization, which is important for targeted therapy and public health surveillance. Nationally, advanced molecular identification tests like those represented by CPT code 87154 are increasingly used in hospital and clinical laboratories managing bloodstream infections.
Key payers addressed in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of the clinical and laboratory context for CPT code 87154, the typical sites of service, and the service category. The publication also summarizes payer coverage considerations and the common modifiers associated with laboratory services where available. Clinical context explains how multiplex amplification assays add taxonomic resolution and resistance detection beyond conventional culture methods. Policy and billing sections review reimbursement and coding considerations at a high level and note where data is not available in the input.
What readers will learn: the clinical purpose of CPT code 87154, how and where the service is typically performed, which major national payers are relevant to coverage discussions, and which aspects of policy, coding, and clinical interpretation are most pertinent for laboratories and billing professionals. Data not available in the input is noted where applicable.
Billing Code Overview
CPT code 87154 describes a molecular, multiplex amplification test performed on a previously cultured blood specimen or an isolate that has already been identified to genus and species. The assay amplifies DNA or RNA targets and uses probes for multiple targets (multiplex) to identify at least six targets that refine identification to the taxonomic level of type and provide information on organism-specific markers and resistance to medications.
Service Type: Molecular diagnostic testing (multiplex amplification with probe detection)
Typical Site of Service: Clinical laboratory or hospital laboratory using cultured blood specimens or isolates
Clinical & Coding Specifications
Clinical Context
A hospitalized adult patient with positive blood cultures for a Gram-negative bacillus is being evaluated for bloodstream infection. The microbiology laboratory has a previously cultured blood specimen with the organism identified to genus and species. The clinician requests advanced molecular typing to determine the organism type and to assess genetic markers of antimicrobial resistance. The laboratory performs a multiplex nucleic acid amplification test that targets at least six genetic markers to definitively type the pathogen and provide resistance information.
Typical workflow:
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The clinician documents the bloodstream infection and orders organism typing for therapeutic decision-making.
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The microbiology technologist retrieves the previously cultured blood specimen or isolate and prepares nucleic acid extraction.
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The analyst runs a multiplex amplification assay that increases DNA/RNA targets and hybridizes probes for multiple targets to identify organism type and resistance markers.
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Results are interpreted by a laboratory physician or microbiologist, and a report is routed to the treating team to guide antimicrobial selection.
Typical site of service: hospital clinical microbiology laboratory or independent clinical laboratory supporting inpatient care.
Service type: molecular diagnostic test — multiplex nucleic acid amplification and probe-based target identification performed on a cultured blood specimen.