Lab tests CPT 86431 Inpatient — admitted to hospital

Rheumatoid factor test cost in Joplin, MO — inpatient

In Joplin, MO-KS, 1 hospital lists a cash price for rheumatoid factor (RF) test as an inpatient: from $71.82 to $71.82, with a median of $71.82. Across Missouri, the median is $36.04 at 28 hospitals.

Cash prices at 1 facility for code 86431, as an inpatient (admitted to hospital) . Collected Sep 25, 2026; the hospital files themselves were last updated between Sep 1, 2026 and Sep 1, 2026.

Lowest$71.82Freeman Health System - Freeman West
Median$71.82half pay less
Highest$71.82in this market
Difference1.0×highest vs lowest

Hospitals, cheapest first

HospitalCash price List priceInsurers payOff listFile date
Freeman Health System - Freeman West Joplin, MO · (417) 347-1111 RA TEST (JOPLIN) $71.82 $179.55 — 60% Sep 1, 2026
source file

Inpatient: lowest $71.82, median $71.82, highest $71.82.

As an outpatient, the same code is billed by 5 facilities here, median $69.55 — that is the price to compare if you are not being admitted.

What it is

Rheumatoid factor is an antibody found in many people with rheumatoid arthritis. The test is part of the workup for joint pain and swelling.

What the price covers

The price usually covers running the test. The blood draw (36415) is often billed as a separate line.