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
Detection test by immunoassay technique for influenza virus
Helena, CA
Price type
St Helena Hospital’s median price of $127 is 617% above the median hospital's median price ($18), higher than 97% of the 1,869 hospitals reporting CPT 87400. The highlighted bar is where this hospital falls; shaded is the middle 50% of hospitals.
Last updated: Jul 15, 2026
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