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Procedure price report · Other Laboratory

Natural killer cell count in blood

CPT 86357the billing code this page is about

A laboratory test that counts the total number of natural killer cells, a type of immune white blood cell, in a blood sample.

Hospitals typically charge $100 cash for this outpatient procedure — the median across 2,576 hospitals that filed a usable cash price; the average of the middle 60% is $103. Most fall between $43 and $183 (20th–80th percentile).

Hospitals
2,576
States
50
Filings dated
Dec 2023 – 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 2,576 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
$29$50$100$165$290

The most expensive tenth of hospitals charges at least 9.9× what the cheapest tenth charges ($29 vs $290).

How the prices are spread

$17 – $23: 87 hospitals$17$23 – $32: 110 hospitals$32 – $43: 209 hospitals$32$43 – $59: 255 hospitals$59 – $82: 317 hospitals$59$82 – $112: 345 hospitals$112 – $153: 418 hospitals$112$153 – $210: 313 hospitals$210 – $288: 158 hospitals$210$288 – $395: 135 hospitals$288median $100price bands are equal on a log scale
Hospitals per price band (2,347 of 2,576 — the bands cover the 5th to 95th percentile)
FromToHospitals
$17$2387
$23$32110
$32$43209
$43$59255
$59$82317
$82$112345
$112$153418
$153$210313
$210$288158
$288$395135

By state

The median cash price in each state, against the national median of $100.

Alaska: median $85 across 13 hospitalsAK$85Maine: median $67 across 27 hospitalsME$67Vermont: median $85 across 10 hospitalsVT$85New Hampshire: median $145 across 21 hospitalsNH$145Washington: median $144 across 51 hospitalsWA$144Idaho: median $115 across 19 hospitalsID$115Montana: median $117 across 17 hospitalsMT$117North Dakota: median $124 across 20 hospitalsND$124Minnesota: median $94 across 92 hospitalsMN$94Illinois: median $131 across 112 hospitalsIL$131Wisconsin: median $167 across 91 hospitalsWI$167Michigan: median $84 across 85 hospitalsMI$84New York: median $83 across 100 hospitalsNY$83Massachusetts: median $114 across 48 hospitalsMA$114Oregon: median $115 across 39 hospitalsOR$115Nevada: median $115 across 13 hospitalsNV$115Wyoming: median $101 across 13 hospitalsWY$101South Dakota: median $139 across 19 hospitalsSD$139Iowa: median $110 across 57 hospitalsIA$110Indiana: median $81 across 82 hospitalsIN$81Ohio: median $103 across 121 hospitalsOH$103Pennsylvania: median $139 across 115 hospitalsPA$139New Jersey: median $42 across 54 hospitalsNJ$42Connecticut: median $108 across 19 hospitalsCT$108Rhode Island: median $75 across 10 hospitalsRI$75California: median $51 across 105 hospitalsCA$51Utah: median $290 across 37 hospitalsUT$290Colorado: median $94 across 58 hospitalsCO$94Nebraska: median $103 across 53 hospitalsNE$103Missouri: median $107 across 60 hospitalsMO$107Kentucky: median $89 across 49 hospitalsKY$89West Virginia: median $78 across 25 hospitalsWV$78Virginia: median $135 across 68 hospitalsVA$135Maryland: median $132 across 39 hospitalsMD$132Delaware: 7 hospitals filed a usable price — fewer than 10, so no figureDEArizona: median $106 across 32 hospitalsAZ$106New Mexico: median $117 across 16 hospitalsNM$117Kansas: median $85 across 50 hospitalsKS$85Arkansas: median $40 across 28 hospitalsAR$40Tennessee: median $66 across 55 hospitalsTN$66North Carolina: median $85 across 76 hospitalsNC$85South Carolina: median $141 across 40 hospitalsSC$141Oklahoma: median $68 across 52 hospitalsOK$68Louisiana: median $75 across 40 hospitalsLA$75Mississippi: median $37 across 41 hospitalsMS$37Alabama: median $45 across 26 hospitalsAL$45Georgia: median $85 across 87 hospitalsGA$85Hawaii: median $165 across 14 hospitalsHI$165Texas: median $65 across 158 hospitalsTX$65Florida: median $36 across 112 hospitalsFL$36
Cash price by state, most expensive first. National median $100. A state needs at least 10 hospitals with a usable price to show a figure.
StateHospitalsMedianvs national20th–80th
Utah UT37$290+190%$98 – $341
Wisconsin WI91$167+67%$132 – $257
Hawaii HI14$165+65%$144 – $253
New Hampshire NH21$145+45%$18 – $213
Washington WA51$144+44%$70 – $198
South Carolina SC40$141+41%$53 – $150
Pennsylvania PA115$139+39%$47 – $374
South Dakota SD19$139+39%$60 – $230
Virginia VA68$135+35%$57 – $330
Maryland MD39$132+32%$100 – $163
Illinois IL112$131+31%$65 – $236
North Dakota ND20$124+24%$66 – $232
Montana MT17$117+17%$92 – $162
New Mexico NM16$117+17%$64 – $138
Idaho ID19$115+15%$22 – $276
Nevada NV13$115+15%$37 – $200
Oregon OR39$115+15%$56 – $185
Massachusetts MA48$114+14%$85 – $158
Iowa IA57$110+10%$84 – $153
Connecticut CT19$108+8%$58 – $161
Missouri MO60$107+7%$62 – $172
Arizona AZ32$106+6%$40 – $358
Nebraska NE53$103+3%$71 – $165
Ohio OH121$103+3%$65 – $179
Wyoming WY13$101+1%$57 – $160
Minnesota MN92$94−6%$58 – $180
Colorado CO58$94−6%$45 – $186
Kentucky KY49$89−12%$43 – $208
Georgia GA87$85−15%$48 – $140
Kansas KS50$85−15%$51 – $121
Vermont VT10$85−15%$49 – $173
Alaska AK13$85−15%$38 – $182
North Carolina NC76$85−15%$58 – $151
Michigan MI85$84−16%$42 – $149
New York NY100$83−17%$40 – $175
Indiana IN82$81−19%$53 – $160
West Virginia WV25$78−23%$19 – $170
Rhode Island RI10$75−25%$68 – $120
Louisiana LA40$75−25%$49 – $105
Oklahoma OK52$68−32%$55 – $107
Maine ME27$67−33%$30 – $171
Tennessee TN55$66−34%$34 – $116
Texas TX158$65−35%$17 – $200
California CA105$51−49%$16 – $175
Alabama AL26$45−55%$34 – $132
New Jersey NJ54$42−58%$33 – $128
Arkansas AR28$40−60%$37 – $114
Mississippi MS41$37−63%$22 – $81
Florida FL112$36−64%$14 – $204
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 $100.

Cash price by hospital segment. A segment needs at least 20 hospitals to show a figure.
SegmentHospitalsMedian20th–80th
Hospital type
Acute care1,918$97$42 – $181
Children’s51$90$37 – $250
Critical access597$112$58 – $190
Ownership
For-profit297$97$41 – $307
Government386$85$43 – $146
Non-profit1,883$105$43 – $185
System affiliation
Part of a system2,179$102$42 – $188
Independent397$93$47 – $162

Cash price vs list price

Median list price (chargemaster)$167
Median cash price$100
Cash as a share of list, median hospital63%

At the typical hospital, asking for the cash price cuts the list price by about 37%. 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

1,809 hospitals filed a usable inpatient cash price for this code. The median is $105 and the average of the middle 60% is $109; most fall between $46 and $194.

Cash price percentiles, inpatient, across 1,809 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
$29$54$105$173$285

The most expensive tenth of hospitals charges at least 9.7× what the cheapest tenth charges ($29 vs $285).

Of the 1,997 hospitals that filed this code inpatient, 1,809 gave a usable cash price; 102 carried a plausibility flag, 0 filed a number their own filing marks as not a price, 0 gave an estimate, and 86 a list price only.

How complete is this

2,576 of the 3,956 hospitals with a price file in our corpus (65%) filed a usable outpatient cash price for this code, and those are the hospitals every figure on this page is computed from.

What the 2,813 hospitals that filed this code at all gave us
Usable cash price — counted2,576
Cash price carrying a plausibility flag — shown on the compare tool, excluded here134
A number the filing itself marks as not a price (a placeholder, a ratio) — excluded2
An estimate rather than a filed cash price — excluded1
A list price only, no cash figure — excluded100
Hospitals that filed this code2,813

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 September 4, 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 Nk Cells,Total Count(TB Pan).

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, “Natural killer cell count in blood (CPT 86357) — cash price report,” computed September 25, 2026. https://hospitalrates.com/procedures/cpt-86357-natural-killer-cell-count-in-blood