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Procedure price report · Other Laboratory

Complement component activity blood test, each component

CPT 86161the billing code this page is about

Blood test measuring how well one individual complement protein of the immune system functions; billed once for each component tested.

Hospitals typically charge $70 cash for this outpatient procedure — the median across 2,645 hospitals that filed a usable cash price; the average of the middle 60% is $75. Most fall between $27 and $141 (20th–80th percentile).

Hospitals
2,645
States
50
Filings dated
Dec 2022 – Sep 2026
Computed
September 25, 2026
Prices checked
through September 25, 2026

Median: half of hospitals filed less, half more — and it is a price some hospital actually filed. Average of the middle 60%: the mean of the prices between the 20th and 80th percentiles. We never publish the plain average, the lowest or the highest price: the extremes in hospital price files are chargemaster artefacts, not prices anyone pays.

What hospitals charge, from cheapest to most expensive

Cash price percentiles, outpatient, across 2,645 hospitals. Each figure is a price a hospital filed. 10th: one in ten hospitals charges less; 25th: a quarter charge less; Median: half charge less; 75th: three quarters charge less; 90th: nine in ten charge less.
10th25thMedian75th90th
$18$33$70$125$202

The most expensive tenth of hospitals charges at least 11× what the cheapest tenth charges ($18 vs $202).

How the prices are spread

$13 – $18: 125 hospitals$13$18 – $24: 172 hospitals$24 – $33: 247 hospitals$24$33 – $45: 202 hospitals$45 – $62: 343 hospitals$45$62 – $85: 317 hospitals$85 – $116: 356 hospitals$85$116 – $159: 317 hospitals$159 – $218: 197 hospitals$159$218 – $299: 105 hospitals$218median $70price bands are equal on a log scale
Hospitals per price band (2,381 of 2,645 — the bands cover the 5th to 95th percentile)
FromToHospitals
$13$18125
$18$24172
$24$33247
$33$45202
$45$62343
$62$85317
$85$116356
$116$159317
$159$218197
$218$299105

By state

The median cash price in each state, against the national median of $70.

Alaska: median $129 across 13 hospitalsAK$129Maine: median $37 across 17 hospitalsME$37Vermont: 8 hospitals filed a usable price — fewer than 10, so no figureVTNew Hampshire: median $61 across 18 hospitalsNH$61Washington: median $74 across 62 hospitalsWA$74Idaho: median $59 across 19 hospitalsID$59Montana: median $96 across 14 hospitalsMT$96North Dakota: median $78 across 17 hospitalsND$78Minnesota: median $82 across 75 hospitalsMN$82Illinois: median $133 across 124 hospitalsIL$133Wisconsin: median $80 across 94 hospitalsWI$80Michigan: median $29 across 74 hospitalsMI$29New York: median $35 across 97 hospitalsNY$35Massachusetts: median $73 across 49 hospitalsMA$73Oregon: median $46 across 38 hospitalsOR$46Nevada: median $59 across 16 hospitalsNV$59Wyoming: median $50 across 12 hospitalsWY$50South Dakota: median $172 across 13 hospitalsSD$172Iowa: median $75 across 53 hospitalsIA$75Indiana: median $69 across 87 hospitalsIN$69Ohio: median $76 across 123 hospitalsOH$76Pennsylvania: median $67 across 116 hospitalsPA$67New Jersey: median $13 across 50 hospitalsNJ$13Connecticut: median $53 across 19 hospitalsCT$53Rhode Island: 9 hospitals filed a usable price — fewer than 10, so no figureRICalifornia: median $32 across 109 hospitalsCA$32Utah: median $120 across 36 hospitalsUT$120Colorado: median $91 across 57 hospitalsCO$91Nebraska: median $96 across 51 hospitalsNE$96Missouri: median $90 across 67 hospitalsMO$90Kentucky: median $106 across 60 hospitalsKY$106West Virginia: median $33 across 38 hospitalsWV$33Virginia: median $85 across 66 hospitalsVA$85Maryland: median $69 across 37 hospitalsMD$69Delaware: 7 hospitals filed a usable price — fewer than 10, so no figureDEArizona: median $47 across 32 hospitalsAZ$47New Mexico: median $76 across 17 hospitalsNM$76Kansas: median $92 across 59 hospitalsKS$92Arkansas: median $45 across 25 hospitalsAR$45Tennessee: median $53 across 59 hospitalsTN$53North Carolina: median $57 across 77 hospitalsNC$57South Carolina: median $188 across 47 hospitalsSC$188Oklahoma: median $80 across 57 hospitalsOK$80Louisiana: median $41 across 44 hospitalsLA$41Mississippi: median $51 across 47 hospitalsMS$51Alabama: median $60 across 35 hospitalsAL$60Georgia: median $71 across 96 hospitalsGA$71Hawaii: median $61 across 14 hospitalsHI$61Texas: median $94 across 181 hospitalsTX$94Florida: median $25 across 110 hospitalsFL$25
Cash price by state, most expensive first. National median $70. A state needs at least 10 hospitals with a usable price to show a figure.
StateHospitalsMedianvs national20th–80th
South Carolina SC47$188+168%$76 – $189
South Dakota SD13$172+146%$51 – $240
Illinois IL124$133+90%$48 – $242
Alaska AK13$129+84%$48 – $251
Utah UT36$120+72%$120 – $149
Kentucky KY60$106+52%$34 – $166
Montana MT14$96+37%$80 – $176
Nebraska NE51$96+37%$46 – $194
Texas TX181$94+35%$51 – $215
Kansas KS59$92+32%$50 – $195
Colorado CO57$91+30%$70 – $180
Missouri MO67$90+28%$47 – $192
Virginia VA66$85+21%$21 – $143
Minnesota MN75$82+17%$32 – $124
Oklahoma OK57$80+14%$43 – $144
Wisconsin WI94$80+14%$51 – $127
North Dakota ND17$78+12%$57 – $111
New Mexico NM17$76+9%$51 – $150
Ohio OH123$76+8%$43 – $132
Iowa IA53$75+7%$49 – $148
Washington WA62$74+6%$49 – $116
Massachusetts MA49$73+4%$34 – $120
Georgia GA96$71+2%$33 – $138
Indiana IN87$69−1%$23 – $178
Maryland MD37$69−2%$51 – $81
Pennsylvania PA116$67−5%$18 – $183
New Hampshire NH18$61−13%$29 – $356
Hawaii HI14$61−13%$31 – $106
Alabama AL35$60−14%$22 – $133
Nevada NV16$59−16%$36 – $181
Idaho ID19$59−16%$34 – $125
North Carolina NC77$57−19%$23 – $140
Tennessee TN59$53−24%$21 – $115
Connecticut CT19$53−24%$29 – $133
Mississippi MS47$51−27%$28 – $89
Wyoming WY12$50−29%$37 – $99
Arizona AZ32$47−33%$19 – $89
Oregon OR38$46−35%$32 – $96
Arkansas AR25$45−36%$34 – $105
Louisiana LA44$41−42%$16 – $108
Maine ME17$37−47%$15 – $73
New York NY97$35−50%$18 – $121
West Virginia WV38$33−53%$16 – $115
California CA109$32−54%$18 – $96
Michigan MI74$29−59%$12 – $117
Florida FL110$25−64%$15 – $61
New Jersey NJ50$13−81%$12 – $41
Rhode Island RI9not enough hospitals filed a usable price
Vermont VT8not enough hospitals filed a usable price
Delaware DE7not enough hospitals filed a usable price

Hospitals like yours

The same distribution cut by the kind of hospital. Hospital type and ownership come from CMS; a hospital counts as part of a system when its price file is shared with at least one other hospital under the same brand. The national median is $70.

Cash price by hospital segment. A segment needs at least 20 hospitals to show a figure.
SegmentHospitalsMedian20th–80th
Hospital type
Acute care1,981$65$25 – $140
Children’s49$99$34 – $140
Critical access605$84$38 – $150
Ownership
For-profit357$86$28 – $241
Government431$67$27 – $142
Non-profit1,847$68$28 – $138
System affiliation
Part of a system2,200$70$27 – $141
Independent445$73$31 – $134

Cash price vs list price

Median list price (chargemaster)$119
Median cash price$70
Cash as a share of list, median hospital60%

At the typical hospital, asking for the cash price cuts the list price by about 40%. The share is the median of each hospital’s own cash ÷ list ratio, over hospitals that filed both — not the ratio of the two medians above.

The same procedure, inpatient

1,828 hospitals filed a usable inpatient cash price for this code. The median is $73 and the average of the middle 60% is $77; most fall between $32 and $140.

Cash price percentiles, inpatient, across 1,828 hospitals. Each figure is a price a hospital filed. 10th: one in ten hospitals charges less; 25th: a quarter charge less; Median: half charge less; 75th: three quarters charge less; 90th: nine in ten charge less.
10th25thMedian75th90th
$21$37$73$127$189

The most expensive tenth of hospitals charges at least 9.0× what the cheapest tenth charges ($21 vs $189).

Of the 2,016 hospitals that filed this code inpatient, 1,828 gave a usable cash price; 98 carried a plausibility flag, 0 filed a number their own filing marks as not a price, 0 gave an estimate, and 90 a list price only.

How complete is this

2,645 of the 3,956 hospitals with a price file in our corpus (67%) filed a usable outpatient cash price for this code, and those are the hospitals every figure on this page is computed from.

What the 2,878 hospitals that filed this code at all gave us
Usable cash price — counted2,645
Cash price carrying a plausibility flag — shown on the compare tool, excluded here129
A number the filing itself marks as not a price (a placeholder, a ratio) — excluded1
An estimate rather than a filed cash price — excluded0
A list price only, no cash figure — excluded103
Hospitals that filed this code2,878

Sections not shown for this setting

  • Against Medicare: Medicare has no separately payable national outpatient (OPPS) rate for this code, so there is nothing honest to compare against.
  • Since our last snapshot: there is no earlier snapshot at least 90 days older than this one yet.

We last checked these hospitals’ price files for changes between July 20, 2026 and September 25, 2026; the figures were computed September 25, 2026 from filings loaded through September 25, 2026. The percentiles and averages use only the “counted” row.

Related procedures

Part of the Other Laboratory family.

Hospitals file this code under descriptions such as HC C3(Complement 3).

Method

Source
The machine-readable price files every U.S. hospital is required by CMS to publish, parsed per hospital. Nothing is surveyed, sampled or modelled.
What counts
One cash (self-pay) price per hospital for this code and setting. A hospital’s own filing can rule its number out — a placeholder, a “not applicable” note, a list price standing in for cash — and our plausibility checks can flag a price far below what every other hospital files. Both kinds are disclosed above and excluded from the statistics; on the compare tool a flagged price is still shown.
Statistics
Percentiles are discrete: each is a price some hospital filed. The average is the mean of the prices between the 20th and 80th percentiles. We never publish the plain mean, the minimum or the maximum. A state needs 10 hospitals and a segment 20 to show a figure; otherwise the row shows its count and no number. Medicare is the national unadjusted OPPS rate where one exists.
Names
Procedure names on these pages are our own plain-language titles, not the AMA’s copyrighted CPT descriptors. The code is the identity.

The full rules — sources, statistics, thresholds, limitations — are on the methodology page.

Download this page’s figures: JSON · CSV. Aggregates only — the per-hospital prices are on the compare tool.

Cite: HospitalRates.com, “Complement component activity blood test, each component (CPT 86161) — cash price report,” computed September 25, 2026. https://hospitalrates.com/procedures/cpt-86161-complement-component-activity-blood-test-each-component