Summary & Overview
CPT 85049: Automated Platelet Count (Whole Blood)
CPT code 85049 represents an automated platelet count performed on whole blood specimens using automated hematology analyzers. As a routine hematology laboratory test, it supports diagnosis and management of bleeding, clotting, and hematologic disorders and is widely used across clinical settings, from outpatient laboratories to hospital inpatient services. The code matters nationally because platelet counts are integral to urgent care, perioperative assessment, chronic disease monitoring, and population-level laboratory utilization trends.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical context for the test, common settings where the service is delivered, and the payer landscape that typically reimburses this laboratory procedure. The publication outlines benchmarks for utilization and reimbursement where available, highlights relevant policy or coverage considerations affecting laboratory services, and summarizes implications for clinical workflows and billing practices. Data not available in the input is noted where necessary.
Billing Code Overview
CPT code 85049 describes a technical laboratory test that analyzes whole blood samples to count platelets (thrombocytes) using automated cell counters. Platelets are cellular components of blood that play a key role in blood clotting and hemostasis. The procedure involves processing whole blood specimens on hematology analyzers to produce a platelet count as part of a complete blood count or as a targeted hematologic evaluation.
Service Type: Laboratory — automated platelet count (technical component)
Typical Site of Service: Clinical laboratory or hospital laboratory; the test is commonly performed in outpatient laboratory facilities, hospital labs, and diagnostic testing centers where automated hematology analyzers are available.
Clinical & Coding Specifications
Clinical Context
A 62-year-old outpatient presents to a clinic for routine preoperative evaluation prior to elective hernia repair. The clinician orders a complete blood count with platelet determination to assess bleeding risk. A phlebotomy technician collects a whole blood sample which is sent to the clinical laboratory. A medical laboratory analyst performs an automated platelet count using a hematology analyzer and documents the platelet concentration, flagging any instrument alerts for review. Results are verified by laboratory personnel and reported back to the ordering surgeon and primary care provider to inform perioperative planning and bleeding risk management.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 | Professional component | Use when reporting only the professional interpretation component if applicable in split-bill situations. |
TC | Technical component | Use when reporting only the technical component of the laboratory test (instrumentation, technician performance). |