CPT 86431

Immunoassay

Current code51 hospitals with prices

This name is the CMS category the code belongs to (CMS's Restructured BETOS Classification System), shared with similar codes. The official CPT description belongs to the American Medical Association and isn't shown.

What Washington hospitals publish for this code

Commercial insurance: Rate negotiated with a private insurer or employer plan, including exchange and public-option plans.

Prices for CPT 86431 by hospital
HospitalCommercial insurance rates (lowest – highest)Cash priceList price (before discounts)
BHC Fairfax HospitalKirkland$19.38 – $35.707 plans$51.00$51.00
Capital Medical CenterOlympiaFile dated 2026-08-27$109 – $1162 plans$54.40$136
Cascade Valley HospitalArlington$4.76 – $56010 plans$44.80$56.00
Coulee Medical CenterGrand Coulee—$99.23 – $112$110 – $125
Deaconess Medical CenterSpokaneFile dated 2026-08-27$44.73 – $45.992 plans$25.20$63.00
EvergreenHealth Medical CenterKirkland$5.87 – $15528 plans$47.20 – $134$59.00 – $167
EvergreenHealth MonroeMonroe$6.80 – $15517 plans$47.20 – $134$59.00 – $167
Harborview Medical CenterSeattleFile dated 2026-04-01—$78.55$112
Highline Medical CenterBurienFile dated 2026-02-28$38.51 – $80.604 plans$27.35$89.55
Island HospitalAnacortes$5.67 – $17.1017 plans$18.00$18.00
Kadlec Regional Medical CenterRichlandFile dated 2026-04-01—$79.10$113
Mary Bridge Children's HospitalTacomaFile dated 2026-08-27$22.89 – $28.006 plans$14.00$35.00
MultiCare Auburn Medical CenterAuburnFile dated 2026-08-27$25.552 plans$14.00$35.00
MultiCare Covington Medical CenterCovingtonFile dated 2026-08-27$25.552 plans$14.00$35.00
MultiCare Good Samaritan HospitalPuyallupFile dated 2026-08-27$25.552 plans$14.00$35.00
MultiCare Valley HospitalSpokane ValleyFile dated 2026-08-27$45.362 plans$25.20$63.00
Olympic Medical CenterPort AngelesFile dated 2026-06-24$27.39 – $59.006 plans$39.20 – $47.20$49.00 – $59.00
Overlake Hospital Medical Center & ClinicsBellevueFile dated 2026-04-01—$12.86 – $73.70$25.73 – $147
Prov Sacred HRT Med Ctr & Childs Hosp.SpokaneFile dated 2026-04-01—$200$285
Providence Centralia HospitalCentraliaFile dated 2026-04-01—$24.96$48.00
Providence Holy Family HospitalSpokaneFile dated 2026-04-01—$77.00$110
Providence Mount Carmel HospitalColvilleFile dated 2026-04-01—$90.30$129
Providence Regional Medical Center EverettEverettFile dated 2026-04-01—$32.24$62.00
Providence St Joseph HospitalChewelahFile dated 2026-04-01—$141$201
Providence St Mary Medical CenterWalla WallaFile dated 2026-04-01—$16.10 – $107$23.00 – $153
Providence St Peter HospitalOlympiaFile dated 2026-04-01—$24.96$48.00
Skagit Valley HospitalMount Vernon$6.80 – $95.9510 plans$80.80$101
St Anthony HospitalGig HarborFile dated 2026-02-28$64.48 – $67.172 plans$27.24$89.55
St Clare HospitalLakewoodFile dated 2026-02-28$64.48 – $67.172 plans$25.82$89.55
St Elizabeth HospitalEnumclawFile dated 2026-02-28$35.82 – $80.605 plans$31.65$89.55
St Francis Community HospitalFederal WayFile dated 2026-02-28$64.48 – $67.172 plans$28.11$89.55
St Joseph Medical CenterTacomaFile dated 2026-02-28$64.48 – $67.172 plans$29.66$89.55
St Michael Medical CenterSilverdaleFile dated 2026-02-28$56.42 – $80.6010 plans$39.53$89.55
Swedish Edmonds HospitalEdmondsFile dated 2026-04-01—$29.76$62.00
Swedish IssaquahIssaquahFile dated 2026-04-01—$29.76$62.00
Swedish Medical CenterSeattleFile dated 2026-04-01—$29.76$62.00
Swedish Medical Center / Cherry HillSeattleFile dated 2026-04-01—$29.76$62.00
Tacoma General Allenmore HospitalTacomaFile dated 2026-08-27$25.552 plans$14.00$35.00
Three Rivers HospitalBrewster—$101$101
Trios HealthKennewick——$139
University of Washington Medical CtrSeattleFile dated 2026-04-01—$48.82$69.75
Virginia Mason Medical CenterSeattle$37.15 – $46.404 plans$29.58$58.00
Yakima Valley MemorialYakimaFile dated 2026-08-27$49.841 plan$35.60$89.00

Lowest and highest amounts each hospital lists for this code during a hospital stay, including lines it lists for both settings or without saying which. A doctor’s fee is shown separately when the hospital lists one with the code. “At least” means plans were counted in more than one group and some may be the same plan. This is one line of a bill; most care brings several.

Medicare (traditional) reference

Only for people on original Medicare. These are CMS’s 2026 amounts. They aren’t what private insurance or cash patients pay.

Lab fee schedule (national limit)
$5.67