Lab tests CPT 86780 Inpatient — admitted to hospital

Syphilis test (treponemal) cost in Nashville, TN — inpatient

In Nashville-Davidson--Murfreesboro--Franklin, TN, 7 hospitals list a cash price for syphilis antibody test (Treponema pallidum) as an inpatient: from $15.66 to $80.35, with a median of $32.81. The lowest listed price is at Vanderbilt Wilson County Hospital — $17.15 less than the median here. Across Tennessee, the median is $30.99 at 88 hospitals.

Cash prices at 7 facilities across 6 cities for code 86780, as an inpatient (admitted to hospital) . Collected Oct 2, 2026; the hospital files themselves were last updated between Oct 1, 2025 and Sep 1, 2026.

Lowest$15.66Vanderbilt Wilson County Hospital
Median$32.81half of hospitals charge less
Highest$80.35in this market
Difference5.1×highest vs lowest

Where each hospital's price falls

Each dot is one hospital's cash price on a scale from the lowest to the highest in Nashville-Davidson--Murfreesboro--Franklin, TN.

median
Lowest $15.66Highest $119.52

Hospitals, cheapest first

HospitalCash priceList priceInsurers payOff list
Vanderbilt Wilson County Hospital lowest Lebanon, TN · (615) 444-2250 HC TRANSPLANT VIRAL STUDIES TREPONEMA PALLIDUM-MBC File of Oct 1, 2025 · source file $15.66 $54.00 $12.55–$47.40 71%
Vanderbilt University Medical Center Nashville, TN · (615) 322-3454 HC TRANSPLANT VIRAL STUDIES TREPONEMA PALLIDUM-MBC File of Oct 1, 2025 · source file $29.16 $54.00 $12.55–$47.40 46%
Stones River Hospital Woodbury, TN · (615) 563-4001 SYPHILIS SEROLOGY source file $32.81 $109.35 $9.29–$50.81 70%
Saint Thomas West Hospital Harding Pk Nashville, TN · (615) 222-2111 SYPHILIS SEROLOGY source file $32.81 $109.35 $11.92–$50.81 70%
Saint Thomas Rutherford Hospital Murfreesboro, TN · (615) 396-4100 SYPHILIS SEROLOGY+1 more line at this price source file $32.81 $109.35 $11.92–$50.81 70%
Vanderbilt Wilson County Hospital Lebanon, TN · (615) 444-2250 HC TREPONEMA PALLIDUM ANTIBODY File of Oct 1, 2025 · source file $44.66 $154.00 $12.55–$123.20 71%
Vanderbilt Wilson County Hospital Lebanon, TN · (615) 444-2250 HC .TREPONEMA PALLIDUM ANTIBODY BY TP-PA File of Oct 1, 2025 · source file $47.56 $164.00 $12.55–$131.20 71%
Metro Nashville General Hospital Nashville, TN · (615) 341-4000 Bill only- 86780 T Pallidum Screening Cascade+2 more lines at this price File of Sep 1, 2026 · source file $52.20 $87.00 — 40%
Metro Nashville General Hospital Nashville, TN · (615) 341-4000 Treponema pallidum Ab by TP-PA ARUP+3 more lines at this price File of Sep 1, 2026 · source file $52.80 $88.00 — 40%
Saint Thomas Rutherford Hospital Murfreesboro, TN · (615) 396-4100 FTA-ABS source file $71.87 $239.55 $11.92–$50.81 70%
Saint Thomas West Hospital Harding Pk Nashville, TN · (615) 222-2111 FTA-ABS source file $71.87 $239.55 $11.92–$50.81 70%
Stones River Hospital Woodbury, TN · (615) 563-4001 FTA-ABS source file $71.87 $239.55 $9.29–$50.81 70%
Williamson Medical Center Franklin, TN · (615) 435-5000 TP-PA source file $80.35 $142.50 $52.87–$135.38 44%
Vanderbilt University Medical Center Nashville, TN · (615) 322-3454 HC TREPONEMA PALLIDUM ANTIBODY File of Oct 1, 2025 · source file $83.16 $154.00 $12.55–$123.20 46%
Vanderbilt University Medical Center Nashville, TN · (615) 322-3454 HC .TREPONEMA PALLIDUM ANTIBODY BY TP-PA File of Oct 1, 2025 · source file $88.56 $164.00 $12.55–$131.20 46%
Saint Thomas Rutherford Hospital Murfreesboro, TN · (615) 396-4100 TREPONEMA PAALIDUM AB source file $119.52 $398.40 $11.92–$50.81 70%
Stones River Hospital Woodbury, TN · (615) 563-4001 TREPONEMA PAALIDUM AB source file $119.52 $398.40 $9.29–$50.81 70%
Saint Thomas West Hospital Harding Pk Nashville, TN · (615) 222-2111 TREPONEMA PALLIDUM AB source file $119.52 $398.40 $11.92–$50.81 70%
Hospital The hospital that published the price, its city and the line exactly as written in its price file.
Cash price The hospital's own price for a patient paying without insurance (“discounted cash” in its price file). Hospitals must publish it under federal law, 45 CFR 180.50. Call to confirm it before booking. More
List price The hospital's full chargemaster price (“gross charge”) before any discount. Almost nobody pays it; the gap to the cash price shows what the self-pay discount is worth. More
Insurers pay The lowest and highest rates this hospital has agreed with insurance plans for the same item, from its price file. If the cash price is below what your plan pays and you have not met your deductible, paying cash can cost you less. More
Off list How much lower the cash price is than the list price.

Inpatient: lowest $15.66, median $32.81, highest $80.35 — a 5.1× difference within the same market.

As an outpatient, the same code is billed by 22 facilities here, median $140.76 — that is the price to compare if you are not being admitted.

Cash or insurance?

At 6 of 6 hospitals that publish insurer rates for this code here, the cash price is below the highest rate a health plan has negotiated, and at none is it below every plan's rate. If you have insurance but have not met your deductible, you usually pay your plan's negotiated rate, which falls somewhere in the "Insurers pay" column. Paying cash can cost less, but a cash payment usually does not count toward your deductible. Ask the hospital for both numbers before you book.

What it is

A treponemal antibody test detects antibodies to the bacterium that causes syphilis. Many labs now screen with it first and confirm with an RPR (86592).

What the price covers

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