Hospitals report these codes with terse, inconsistent chargemaster text. This plain-English title was written by an AI model from that text and has not been reviewed by a person, so it can be wrong. The prices on this page come straight from hospital filings and do not depend on it.
Original text from hospital filings
Rheumatoid factor; quantitative
San Antonio, TX
See all hospitals reporting CPT 86431 →Price type
Methodist Hospital Stone Oak’s median price of $10 is about the same as the median hospital's median price ($10), higher than 50% of the 2,455 hospitals reporting CPT 86431. The highlighted bar is where this hospital falls; shaded is the middle 50% of hospitals.
Last updated: May 1, 2026
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