Summary & Overview
CPT 83690: Lipase Assay, Pancreatic Enzyme Quantification
CPT code 83690 represents a laboratory assay that measures lipase, a pancreatic enzyme essential for fat digestion. Nationally, lipase testing is a common diagnostic tool used in emergency departments, inpatient wards, and outpatient laboratories to evaluate suspected acute pancreatitis, monitor pancreatic disease, and guide clinical management. Accurate coding for lipase assays supports appropriate laboratory billing and clinical recordkeeping across care settings.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of the code’s clinical context, common sites of service, and the typical laboratory service type. The publication also provides benchmarking and payer coverage context, discussion of common modifier usage where applicable, and implications for coding workflows and claims processing. While clinical interpretation remains with treating clinicians, the content clarifies billing semantics and operational considerations relevant to laboratories, hospital billing offices, and revenue cycle teams.
Billing Code Overview
CPT code 83690 measures the amount of lipase enzyme in a patient specimen. Lipase is a pancreatic enzyme that aids in the digestion and absorption of fats. The test quantifies lipase concentration to assist clinicians in evaluating pancreatic function and diagnosing conditions such as pancreatitis.
Service Type: Laboratory test — clinical chemistry / enzymatic assay
Typical Site of Service: Clinical laboratory or hospital laboratory
Clinical & Coding Specifications
Clinical Context
A 48-year-old patient presents to the emergency department with sudden onset epigastric abdominal pain radiating to the back, nausea, and vomiting. Vital signs show mild tachycardia and low-grade fever. The emergency physician orders laboratory evaluation including serum lipase to assess for acute pancreatitis. A phlebotomist draws a blood specimen which is transported to the hospital clinical laboratory. The laboratory analyst performs the quantitative lipase assay (83690) on the specimen using an automated chemistry analyzer. Results are reported to the ordering clinician and integrated into the electronic medical record to guide diagnosis and management decisions such as admission, imaging, and supportive care. Typical sites of service include hospital inpatient laboratory, hospital outpatient laboratory, emergency department, and independent clinical reference laboratories. The service type is diagnostic laboratory testing (clinical chemistry assay).
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 | Professional component | Use when billing only the professional interpretation component (rare for automated chemistry assays) |
TC |