Summary & Overview
CPT 83919: Urine Organic Acids Qualitative Analysis
CPT code 83919 denotes a qualitative laboratory test that identifies the presence of abnormal organic acids in a urine specimen, commonly used to detect inherited metabolic disorders and organic acidurias. As a specialized diagnostic assay, this test supports clinical decision-making for patients with suspected metabolic or genetic conditions and is performed in clinical or hospital laboratories.
Key payers discussed in the analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Coverage policies for specialized metabolic testing vary across payers and between commercial and public plans; understanding payer approaches is important for claims submission, preauthorization, and clinical utilization alignment.
Readers will find an overview of the clinical context for 83919, typical sites of service, and payer coverage landscape. The publication explains common billing considerations and lists typical modifiers associated with laboratory services. It also identifies areas where policy updates and payer-specific requirements can affect reimbursement and claims processing. Data not available in the input is noted where applicable.
Billing Code Overview
CPT code 83919 describes a qualitative analysis for organic acids in urine, typically performed on a random urine specimen to identify abnormal organic acids. This test is used primarily to detect metabolic abnormalities that may indicate inherited or genetic organic acidurias and other metabolic disorders.
Service Type: Laboratory — qualitative urine organic acids analysis
Typical Site of Service: Clinical laboratory or hospital laboratory; specimens collected in outpatient clinics, inpatient settings, or specialty metabolic clinics.
Clinical & Coding Specifications
Clinical Context
A 6-month-old infant is referred to a pediatric metabolic clinic after newborn screening abnormalities and episodes of unexplained vomiting, poor feeding, and lethargy. The clinician orders a qualitative urine organic acids test to detect abnormal metabolites suggestive of an inborn error of metabolism (eg, organic acidemias, fatty acid oxidation defects). A single random urine specimen is collected in the clinic or at the hospital and sent to the clinical chemistry laboratory. The laboratory analyst performs 83919 to determine the presence of abnormal organic acids. Results are reviewed by the ordering metabolic specialist or pediatrician to guide confirmatory testing (eg, targeted metabolic panels, molecular testing) and immediate clinical management such as dietary modification or urgent metabolic stabilization.
Typical site of service: outpatient specialty clinic, hospital outpatient laboratory, or inpatient hospital laboratory.
Typical patient workflow:
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Referral and order placed by pediatrician or metabolic specialist.
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Urine specimen collected (random) and labeled with patient identifiers.
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Specimen transported to the lab; accessioning and specimen integrity check.
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Laboratory analyst performs qualitative organic acid screen (
83919). -
Results reported to ordering provider; abnormal findings prompt confirmatory quantitative testing and specialist follow-up.