Summary & Overview
CPT 84488: Stool Trypsin Detection Test
CPT code 84488 represents a stool-based laboratory assay for the detection of trypsin, a pancreatic enzyme, in fecal specimens. The test is clinically relevant for assessing pancreatic exocrine function and supporting diagnosis of malabsorption or other pancreatic disorders. Nationally, this diagnostic assay factors into laboratory service utilization and clinical pathways for gastrointestinal dysfunction.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. The summary highlights payer coverage patterns and typical clinical contexts where the test is ordered. Readers will find concise benchmarks for how the code is used across payers, relevant policy and coverage considerations affecting laboratory reimbursement, and clinical context that clarifies when stool trypsin testing is clinically indicated.
The publication provides practical, policy-focused information: an explanation of the clinical purpose of the test, typical sites of service, common billing modifiers and operational notes (listed elsewhere), and an overview of payer presence. Data not available in the input is noted where applicable. This national-level summary is intended for health policy analysts, lab managers, and billing professionals seeking an overview of CPT code 84488 and its role in diagnostic laboratory services.
Billing Code Overview
CPT code 84488 describes a laboratory test performed by a lab analyst to detect the presence of trypsin in a patient stool specimen. This test identifies pancreatic enzyme activity in fecal material and is used in the clinical evaluation of pancreatic exocrine function and related digestive disorders.
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Service type: Clinical laboratory diagnostic testing
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Typical site of service: Clinical laboratory or hospital laboratory setting
Clinical & Coding Specifications
Clinical Context
A pediatric or adult patient with chronic steatorrhea, failure to thrive, recurrent abdominal pain, or suspected pancreatic exocrine insufficiency submits a stool specimen for laboratory analysis. The clinical workflow begins in outpatient gastroenterology or primary care: a clinician obtains a detailed history and orders stool testing for fecal trypsin (CPT 84488) to evaluate pancreatic enzyme activity. The patient collects a specified stool sample at home using the laboratory’s collection kit and returns it to the clinic or a hospital laboratory. The laboratory technologist receives the specimen, documents specimen integrity and collection time, performs the assay to detect the presence of trypsin, and reports qualitative or quantitative results to the ordering clinician. Results are integrated with other tests (such as fecal elastase, serum pancreatic enzymes, or imaging) to guide diagnosis of conditions like cystic fibrosis, chronic pancreatitis, or malabsorption disorders. Typical sites of service include hospital outpatient laboratories, independent clinical laboratories, and outpatient clinic collection sites. Common specimen handling includes refrigeration or freezing per laboratory protocol and use of standard laboratory biosafety procedures.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
00 | No modifier — standard reporting | Use when no special circumstances apply. |