Summary & Overview
CPT 85652: Automated Erythrocyte Sedimentation Rate (ESR) Test
CPT code 85652 represents an automated erythrocyte sedimentation rate (ESR) test performed on patient blood to measure the rate at which red blood cells settle. As a common laboratory inflammatory marker, this automated ESR assay supports diagnosis and monitoring of inflammatory and rheumatologic conditions across outpatient and inpatient settings. Nationally, ESR testing remains a routine component of laboratory panels where inflammation assessment is indicated, making accurate coding important for clinical documentation and claims processing.
Key payers covered in this overview include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. The analysis addresses how CPT code 85652 is used across typical laboratory sites of service and summarizes operational considerations for automated ESR testing.
Readers will learn the clinical context and service type for CPT code 85652, the typical sites of service where the test is performed, and which major payers are included in the coverage discussion. The publication also outlines where to find benchmark and policy information when available. Data not available in the input is noted where applicable.
Billing Code Overview
CPT code 85652 describes an automated erythrocyte sedimentation rate (ESR) test performed by a laboratory analyst on a patient blood sample to evaluate the rate at which red blood cells settle. The procedure is a laboratory diagnostic test used to detect and monitor inflammatory activity and certain disease processes.
Service Type: Laboratory diagnostic testing (automated ESR platform)
Typical Site of Service: Clinical laboratory or hospital laboratory
Clinical & Coding Specifications
Clinical Context
A typical patient is an adult or pediatric outpatient or inpatient who requires evaluation for systemic inflammation, infection, or autoimmune disease. A clinician orders an erythrocyte sedimentation rate (ESR) when symptoms such as fever of unknown origin, unexplained fatigue, arthralgia, or signs of temporal arteritis or polymyalgia rheumatica are present. The clinical workflow: a phlebotomist collects a peripheral venous blood specimen and sends it to the clinical laboratory. A laboratory analyst performs 85652 on an automated sedimentation platform, which measures the rate at which red blood cells settle over a defined period. Results are reviewed by laboratory staff, entered into the electronic health record, and interpreted by the ordering clinician to support diagnosis, monitor disease activity, or evaluate response to therapy. Typical sites of service include hospital laboratories, independent clinical laboratories, and outpatient clinic laboratories.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
25 | Significant, separately identifiable evaluation and management service on the same day | Use when the patient receives an E/M visit that is distinct from the laboratory service leading to 85652. |