Home
Career Stage
Medical Students Residents Attendings CPT Codes Resources Blog Support

86000 Agglutinins febrile antigen

Pathology & Lab

Also known as: Febrile agglutinins, Widal test

Febrile agglutinin test measures antibodies to bacterial antigens (O and H antigens from Salmonella, Shigella, Rickettsia, and Proteus organisms) that rise during infection.

In Plain Language

Fever-related bacteria test; Infection antibody screening

Clinical Context

Primarily used to diagnose typhoid fever and paratyphoid infections. Tests for antibody development against bacterial antigens appearing during acute infection.

RVU Information

CPT 86000 does not have a physician work RVU assigned by CMS. Reimbursement for this code is determined by payer-specific fee schedules.

Billing & Documentation

Lab and pathology codes require an order from the treating provider with clinical indication. For molecular pathology and genetic testing, document the specific analytes tested and clinical rationale.

How This Code Compares

This code has a work RVU of 0.00, meaning it does not have a physician work component assigned by CMS. In the Pathology & Lab category, 94% of codes share this characteristic.

Specialties

ImmunologyMicrobiologyInfectious Disease

Frequently Asked Questions

What is CPT code 86000?

CPT 86000 (Agglutinins febrile antigen) is a Pathology & Lab code. Febrile agglutinin test measures antibodies to bacterial antigens (O and H antigens from Salmonella, Shigella, Rickettsia, and Proteus organisms) that rise during infection.

Who uses CPT code 86000?

CPT 86000 is used by Immunology, Microbiology, Infectious Disease. Primarily used to diagnose typhoid fever and paratyphoid infections. Tests for antibody development against bacterial antigens appearing during acute infection.

When is CPT 86000 used?

Primarily used to diagnose typhoid fever and paratyphoid infections. Tests for antibody development against bacterial antigens appearing during acute infection.

Track This Code in RVU Edge

Log procedures, calculate wRVUs, and benchmark against national data — all in one app.

CPT® is a registered trademark of the American Medical Association. Data sourced from CMS Physician Fee Schedule RVU26A. Descriptions, synonyms, and clinical context are original content by RVU Edge.