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Radiology & Imaging Billing · Washington

Radiology & Imaging billing and revenue cycle for Washington providers.

Washington operates 284 radiology provider organizations registered in NPPES, representing 1.4 percent of the U.S. radiology billing footprint. Washington is a mid-sized radiology billing market. Radiology revenue cycle requires 26/TC discipline, autonomous coding maturity, RBM-driven PA workflow, IR procedure coding depth, and MPPR awareness. Washington radiology and imaging centers need RCM with deep specialty expertise.

284
NPPES orgs in WA
1.4%
of US market
#22
national rank
90%+
Realization target
Free WA radiology billing audit →Radiology billing services
Last updated: May 31, 2026 · Authored by ASP-RCM Solutions Team

What good radiology billing execution looks like for Washington providers.

The Washington radiology billing market has its own quirks. Here is the operating discipline we install on every Washington engagement.

  1. Professional / technical component (26 / TC) disciplineRadiology billing requires precise 26 (professional read) vs TC (technical equipment + staff) split per encounter. Washington radiology practices and imaging centers need clean component billing.
  2. Autonomous coding for radiology reportsRadiology is one of the most mature specialties for autonomous coding, because structured reports and standardized terminology give the coding engine consistent input.
  3. Prior authorization for advanced imagingMRI, CT, PET, and nuclear medicine require PA from most commercial payers, often through radiology benefit managers (AIM, eviCore). Washington imaging centers need PA automation tuned for RBM workflows.
  4. AUC status: rescinded, off the claimCMS paused the Medicare Appropriate Use Criteria program and rescinded its regulation at 42 CFR 414.94, effective January 1, 2024, so no decision support consultation, G-code or modifier is reported. Payer and benefit manager imaging criteria still apply. Read the 2026 radiology billing brief.
  5. Interventional radiology procedure codingIR procedures carry complex code stacks (radiologic supervision + interpretation, embolization, biopsy, drainage) with bundling rules. Specialty coders required.
  6. Multi-procedure payment reduction (MPPR) awarenessMPPR reduces payment on second and subsequent radiology procedures on the same date of service. Washington radiology billing needs MPPR-aware revenue forecasting.

State rule map ยท Washington

Washington imaging billing: ProviderOne and the HCA authorization number.

Apple Health eligibility can change month to month, and fee-for-service advanced imaging goes through Comagine Health review before HCA issues the number the claim needs.

Outpatient advanced imaging for an Apple Health client
CHECK 1Is the client in an Apple Health MCO on the date of service?
YES
Bill the MCOMCO clients are not authorized through the HCA process. Check eligibility in ProviderOne for each date.
NO
CHECK 2Is the listed CT, MRI or cardiac nuclear study billed with place of service 21 or 23?
YES
No prior authorizationInpatient and observation settings are exempt.
NO
Comagine Health review, HCA decidesComplete the Comagine questionnaire. Urgent or same-day studies allow 5 business days. Bill only the HCA ProviderOne authorization number, never the Comagine reference number. Add a read-only radiologist to the authorization record.
ProviderOne PA #
Claim edits
Referring NPIRadiology claims need the referring provider's NPI.
Z01.89Claims with diagnosis Z01.89 are not paid.
Bilateral and MPPRBilateral procedures use modifier 50 on one line. HCA applies the CMS multiple procedure payment reduction to the technical component.
365 daysFee-for-service claims are due within 365 days (WAC 182-502-0150), or six months from Medicare processing when Medicare pays first.
Commercial: Balance Billing Protection Act

Protected

  • Emergency services
  • Certain services at in-network facilities
  • Enforced by the Office of the Insurance Commissioner

Provider must

  • Not balance bill out-of-network for those services
  • Post the state consumer notice on its website
  • Follow RCW 48.49
What we check before every claim goes out
  • MCO or fee-for-service in ProviderOne
  • HCA authorization number on advanced imaging
  • Reading radiologist on the authorization
  • 365-day filing limit
Free WA radiology billing audit →

More West state guides.

Sister West state pages for radiology billing.

AK→ AZ→ CA→ CO→

FAQ: radiology billing in Washington.

How many radiology providers operate in Washington?

NPPES lists 284 radiology provider organizations in Washington, representing 1.4% of the U.S. footprint. Top concentrations are in Seattle (48), Spokane (28), Tacoma (13).

Does Apple Health cover radiology billing services?

Yes. Apple Health covers radiology billing services for eligible beneficiaries, with plan-specific authorization rules and rate structures that vary by year.

What commercial payers cover radiology billing in Washington?

All major national commercial payers cover radiology billing in Washington, including UnitedHealthcare/Optum, Aetna, Cigna/Evernorth, the dominant Washington Blue Cross Blue Shield plan, and (where active) Humana.

Does ASP-RCM serve radiology providers in Washington?

Yes. ASP-RCM Solutions provides radiology and imaging billing services for providers in Washington and across all 50 states. Senior partners on every account. Request a free RCM audit.

How do I get started?

Request a free RCM audit. We assess your current state, identify revenue leakage, and produce a written prioritized recommendations list.

Free RCM audit for Washington radiology providers.

Send us your last 90 days of claim data. We will send back a 4-page audit with prioritized recommendations and dollar estimates.

Request audit →Talk to a senior partner

All Washington city guides.

Every Washington city with a dedicated Radiology Imaging billing and credentialing guide. 3 cities covered.