CTスキャン（コンピュータ断層撮影）の費用はいくら？
A CT scan uses X-rays and computer processing to create detailed cross-sectional images of the body. It is commonly used to diagnose injuries, infections, tumors, and other internal conditions.
保険なし
$800
保険あり
$250
メディケア
$180
全国平均
$600
By Elena Bellini, MPH, Health Policy & Management · Last reviewed 2026-04-16 ·
Sources: CMS Medicare Provider Utilization and Payment Data 2025 · Methodology · Editorial standards 概要
A CT scan (computed tomography, sometimes called a CAT scan) combines a rotating X-ray beam with a detector and computer reconstruction to build cross-sectional images of the body. CT is fast — a head or chest study can be completed in a few minutes — and is the imaging workhorse of emergency departments for trauma, stroke, chest pain, and abdominal pain. Many CT studies use an intravenous iodinated contrast agent, and some (CT colonography, CT enterography) also use oral contrast. CT delivers a meaningful dose of ionizing radiation, which is why clinicians balance the study's diagnostic value against radiation exposure, particularly in younger patients. The cost varies substantially based on body region, the use of contrast, and whether the study is performed at a hospital outpatient department or a freestanding imaging center.
費用に影響する要素
- Site of service: hospital outpatient facility fees add significant cost; freestanding imaging centers are typically 30–60% cheaper for the same CPT code.
- Body region imaged: head/brain, chest, abdomen, pelvis, and combined studies each have different base rates.
- With or without contrast: contrast studies add an ancillary drug charge and a separate CPT code.
- Multi-phase studies: triple-phase liver or renal CT protocols are billed differently than single-phase studies.
- Whether CT angiography (CTA) is used: CTA of the chest, abdomen, or brain is billed at higher CPT codes than routine CT.
- Radiologist professional fee: sometimes billed separately from the technical fee, especially at hospital-owned sites.
節約方法
- Request a freestanding imaging center when clinically appropriate rather than hospital outpatient imaging.
- Ask for the cash/self-pay price — it is frequently a fraction of the chargemaster rate and sometimes below the insured rate before deductible.
- Confirm prior authorization in advance; unauthorized CT studies are frequently denied and billed to you directly.
- For non-urgent indications, ask whether an alternative study (ultrasound or MRI) could answer the clinical question with equal or greater diagnostic value.
- Use your insurer's cost estimator tool — CT prices within a single metro area can vary 3–5x.
- Verify that the facility is in-network and that the radiologist reading the study is in-network as well.
保険とカバレッジに関する注意事項
Most commercial plans, Medicare Part B, and Medicaid cover CT when medically necessary. Commercial plans typically require prior authorization via a radiology benefit manager. Under Medicare, the typical patient cost is 20% coinsurance after the Part B deductible; commercial plans vary by plan design. Emergency CT studies performed during an ER visit are covered under the No Surprises Act for any plan that covers emergency services. If you are paying without insurance, request the Good Faith Estimate required under the No Surprises Act before the appointment.
Data sources for this page
Cost figures on this page are compiled from the following sources, triangulated per the rules in our methodology:
- CMS Medicare Provider Utilization and Payment Data 2025 — primary CMS reference used as the Medicare-rate anchor.
- Hospital Price Transparency machine-readable files (HPT MRFs) from a sample of major hospitals in each state, per the federal Hospital Price Transparency rule.
- Transparency in Coverage payer in-network rate files for commercial-rate cross-validation.
- State All-Payer Claims Database (APCD) summaries where published (Colorado, New Hampshire, Massachusetts, Minnesota, Maine, Utah, Vermont, Rhode Island, Washington, Oregon).
Last reviewed 2026-04-16. See editorial standards for our fact-checking process and correction policy.
Range: $580 to $1,100 · 50 states shown
州別費用
| 州 | 保険なし | 保険あり | メディケア |
|---|---|---|---|
| Mississippi | $580 | $182 | $130 |
| Arkansas | $600 | $190 | $135 |
| West Virginia | $600 | $188 | $135 |
| Alabama | $620 | $195 | $140 |
| Oklahoma | $620 | $195 | $140 |
| Kentucky | $680 | $214 | $153 |
| Louisiana | $690 | $217 | $155 |
| Iowa | $700 | $220 | $158 |
| New Mexico | $700 | $220 | $158 |
| South Carolina | $700 | $220 | $158 |
| South Dakota | $700 | $220 | $158 |
| Kansas | $710 | $223 | $160 |
| North Dakota | $710 | $223 | $160 |
| Idaho | $720 | $226 | $162 |
| Nebraska | $720 | $226 | $162 |
| Tennessee | $720 | $226 | $162 |
| Indiana | $740 | $232 | $166 |
| Missouri | $740 | $232 | $166 |
| Utah | $740 | $232 | $166 |
| Wyoming | $740 | $232 | $166 |
| Georgia | $750 | $235 | $168 |
| North Carolina | $750 | $235 | $168 |
| Michigan | $760 | $238 | $170 |
| Montana | $760 | $238 | $170 |
| Arizona | $780 | $245 | $175 |
| Ohio | $780 | $245 | $175 |
| Wisconsin | $780 | $245 | $175 |
| Maine | $790 | $248 | $178 |
| Texas | $790 | $248 | $178 |
| Florida | $810 | $255 | $182 |
| Minnesota | $810 | $255 | $182 |
| Illinois | $820 | $258 | $184 |
| Pennsylvania | $820 | $258 | $184 |
| Delaware | $830 | $260 | $185 |
| Nevada | $830 | $260 | $186 |
| Vermont | $830 | $260 | $186 |
| Virginia | $830 | $260 | $186 |
| Colorado | $850 | $270 | $190 |
| New Hampshire | $850 | $267 | $191 |
| Oregon | $850 | $267 | $191 |
| Maryland | $880 | $276 | $198 |
| Rhode Island | $890 | $279 | $200 |
| Washington | $890 | $279 | $200 |
| Connecticut | $960 | $300 | $215 |
| New Jersey | $960 | $301 | $216 |
| California | $1,050 | $330 | $240 |
| Massachusetts | $1,060 | $332 | $238 |
| Alaska | $1,080 | $340 | $245 |
| New York | $1,080 | $339 | $243 |
| Hawaii | $1,100 | $345 | $250 |
よくある質問
保険なしでctスキャン（コンピュータ断層撮影）はいくらかかりますか？
米国でのctスキャン（コンピュータ断層撮影）の保険なし平均費用は$800です。州によって費用は大きく異なります。
保険はctスキャン（コンピュータ断層撮影）をカバーしますか？
ほとんどの医療保険は、医学的に必要な場合にctスキャン（コンピュータ断層撮影）をカバーします。保険適用時の平均自己負担額は$250です。
メディケアはctスキャン（コンピュータ断層撮影）をカバーしますか？
メディケアパートBは通常、医師の処方がある場合にctスキャン（コンピュータ断層撮影）をカバーします。メディケア承認の平均額は$180です。
Elena Bellini による確認 · 最終確認日：2026-04-16
データ出典：CMS Medicare Provider Utilization and Payment Data 2025。最終更新：2026-03-01。この情報は教育目的のみであり、医療アドバイスではありません。 本ウェブサイトは情報提供のみを目的としており、医療アドバイスではありません。必ず資格のある医療専門家にご相談ください。