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
HC PHOSPHORUS ASSAY
Low
$4
Average
$2.1k
Median
$52
High
$3364.1k
Filter by billing methodology
Reflects a negotiated percentage of total billed charges.
Showing only prices reported under the percent of billed charges methodology. Choose another in the filter above to change the chart. 1694 hospitals; the 90th percentile is 7.7× the 10th. Each bar is a price range and its height is how many hospitals fall in it. Hover a bar, or a row in the ladder, for details.
Click a bar to filter the hospitals table to that price range.
| # | Hospital | ||||||
|---|---|---|---|---|---|---|---|
| 1 | Mayo Clinic Arizona Phoenix, AZ | $32 | $30 | $4 | 12% | 10,104–10,662 | $5 – $36 |
| 2 | Massachusetts General Hospital Boston, MA | $56 | $53 | $14 | 26% | 5,033–5,132 | $5 – $74 |
| 3 | West Virginia University Hospitals, Inc. Morgantown, WV | $32 | $28 | $7 | 25% | 3,496–3,541 | $3 – $35 |
| 4 | St. Peter's Health Helena, MT | $50 | $48 | $4 | 9% | 3,004–3,013 | $39 – $52 |
| 5 | Mayo Clinic Rochester, MN | $35 | $34 | $4 | 13% | 2,670–2,895 | $5 – $37 |
| 6 | University of Wisconsin Hospital and Clinics Authority Madison, WI | $42 | $44 | $8 | 18% | 2,398–2,506 | $5 – $60 |
| 7 | Baptist Healthcare System Inc Albany, IN | $39 | $39 | $16 | 40% | 1,806 | $4 – $117 |
| 8 | Baptist Healthcare System Inc Corbin, KY | $62 | $49 | $23 | 47% | 1,598 | $4 – $156 |
| 9 | Baptist Healthcare System Inc. Louisville, KY | $37 | $42 | $17 | 39% | 1,579 | $3 – $156 |
| 10 | Brigham and Women's Hospital Boston, MA | $55 | $50 | $14 | 28% | 1,527–1,644 | $5 – $74 |
Ask Claude or any MCP client for CPT 84100 pricing at a specific hospital — see how to connect.