Summary & Overview
CPT 81015: Microscopic Urinalysis, Laboratory Examination
CPT code 81015 denotes a microscopic urinalysis conducted by a laboratory analyst, involving direct visualization of urine or centrifuged sediment. This common diagnostic laboratory procedure aids in detecting cells, casts, crystals, and other microscopic elements that inform diagnosis and management of urinary tract conditions and systemic diseases. Nationally, microscopic urinalysis is a routine component of outpatient, inpatient, and laboratory-based diagnostic workflows and affects billing, laboratory operations, and clinical decision-making across care settings.
Key payers addressed in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise summary of how CPT code 81015 is defined, typical sites of service, and the clinical context in which the test is ordered. The publication provides benchmarks where available, highlights relevant policy or coverage considerations that commonly affect laboratory billing, and outlines the clinical utility of microscopic urinalysis to support coding and claims processes. Data not available in the input is noted where applicable.
Billing Code Overview
CPT code 81015 describes a microscopic urinalysis performed by a laboratory analyst. The procedure involves direct microscopic examination of a urine specimen or inspection of sediment from a centrifuged urine specimen when a clinician orders a microscopic urinalysis only.
Service type: Laboratory diagnostic test — microscopic urinalysis
Typical site of service: Clinical laboratory or hospital laboratory
Clinical & Coding Specifications
Clinical Context
A 42-year-old female presents to an outpatient primary care clinic with new-onset dysuria and urinary frequency. The clinician collects a clean-catch midstream urine specimen and places an order specifically for a microscopic urinalysis. The specimen is delivered to the hospital laboratory where a lab analyst performs a microscopic examination either directly on the uncentrifuged specimen or on sediment obtained after centrifugation. The analyst documents microscopic findings such as red blood cells, white blood cells, bacteria, epithelial cells, and casts. Results are reported to the ordering provider to support diagnosis and management of urinary tract infection, hematuria, or renal disease. Typical sites of service include hospital laboratories, independent clinical laboratories, and outpatient clinic laboratories where trained laboratory personnel perform the microscopic component of urinalysis.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 | Professional component | Use when reporting only the professional component of a test when a split technical/professional service exists and the lab analyst documents interpretation. |
52 | Reduced services | Use when the microscopic urinalysis is partially completed or limited compared with the full procedure. |