Summary & Overview
CPT 89125: Fat Stain of Stool, Urine, or Respiratory Secretions
CPT code 89125 denotes a laboratory technical procedure in which a lab analyst performs a fat stain on feces, urine, or respiratory secretions to detect fat content. This microscopic staining procedure supports diagnosis of malabsorption, steatorrhea, and select pulmonary or urinary conditions where lipid presence is clinically relevant. The code represents a discrete technical component of specialized clinical laboratory testing and is widely used across hospital and independent laboratories nationally.
Key payers featured in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. The publication outlines payer coverage patterns and serves as a reference for clinical and billing staff on how this test is classified and reported.
Readers will learn the clinical context for ordering a fat stain, where the service is typically performed, and the practical implications for billing the technical laboratory component. The report also provides benchmark information and policy updates relevant to laboratory coding and reimbursement. Data not available in the input for associated taxonomies, ICD-10 diagnoses, and related codes.
Billing Code Overview
CPT code 89125 describes a technical laboratory procedure in which a lab analyst performs a fat stain on a specimen of feces, urine, or respiratory secretions to evaluate for the presence of fat. This service is a specialized clinical laboratory test performed by trained laboratory personnel.
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Service type: Clinical laboratory — qualitative/quantitative microscopic staining and analysis of biological specimens.
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Typical site of service: Clinical laboratory or hospital laboratory setting; specimens are collected in ambulatory clinics, inpatient wards, or outpatient sample collection centers and analyzed in a laboratory equipped for microscopy and staining.
Data not available in the input for associated taxonomies, ICD-10 diagnoses, and related codes.
Clinical & Coding Specifications
Clinical Context
A typical patient is an adult or pediatric patient presenting with chronic steatorrhea, unexplained weight loss, malabsorption, or persistent diarrheal symptoms. A clinician (gastroenterologist, pediatrician, or primary care physician) orders a stool fat stain to evaluate for fat malabsorption. The patient provides a stool specimen collected at home or in the clinic and it is sent to the hospital or reference laboratory. In the laboratory, a clinical laboratory scientist or medical technologist performs the technical procedure described by 89125 — preparing and staining the fecal specimen (or urine/respiratory secretions if clinically indicated) to visualize fat globules under microscopy. Results are reported to the ordering provider; interpretation and treatment decisions (for example, investigation for pancreatic insufficiency, celiac disease, or bile acid malabsorption) are performed by the clinician. Typical sites of service include hospital laboratories, independent clinical reference laboratories, and ambulatory clinic-based labs.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 | Professional component | When billing separately for physician interpretation/report of the lab test if applicable (rare for technical lab stains). |