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Occupational Therapy Billing · Washington

Occupational Therapy billing and revenue cycle for Washington providers.

Washington operates 540 occupational therapy billing organizations registered in NPPES, representing 2.3 percent of the U.S. occupational therapy billing footprint. Washington is an established occupational therapy billing market. OT revenue cycle requires 8-minute rule discipline, GO modifier compliance, Plan of Care recertification, KX modifier above threshold, pediatric and school-based billing workflows, and specialty OT coding depth. Washington OT practices need RCM with OT depth.

540
NPPES orgs in WA
2.3%
of US market
#14
national rank
90%+
Realization target
Free WA occupational therapy billing audit →Occupational Therapy services
Last updated: May 31, 2026 · Authored by ASP-RCM Solutions Team

What good occupational therapy billing execution looks like for Washington providers.

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

  1. 8-minute rule + timed code billingOT billing under Medicare 8-minute rule converts treatment minutes to billable units for timed codes (97165-97168 evaluation, 97530, 97535, 97537 treatment). Accurate time tracking is foundational.
  2. GO modifier disciplineAll OT services bill with GO modifier identifying occupational therapy discipline. Missing GO triggers denial.
  3. Plan of Care + recertification cycleMedicare requires physician-signed Plan of Care every 90 days for OT. Recertification timing must be tracked.
  4. KX modifier above therapy thresholdOT shares therapy threshold with SLP ($2,330 in 2025 combined). KX modifier and supporting documentation required above threshold.
  5. Pediatric OT + school-based billingWashington pediatric OT may bill Apple Health EPSDT, school-based services, or commercial. Each requires distinct workflow.
  6. Hand therapy + specialty OT codingHand therapy and other specialty OT carry distinct procedure codes with documentation requirements. Specialty coding depth matters.

More West state guides.

Sister West state pages for occupational therapy billing.

AK→ AZ→ CA→ CO→

FAQ: occupational therapy billing in Washington.

How many occupational therapy billing providers operate in Washington?

NPPES lists 540 occupational therapy billing organizations in Washington, representing 2.3% of the U.S. footprint. Top concentrations are in Seattle (54), Spokane (37), Vancouver (26).

Does Apple Health cover occupational therapy billing services?

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

What commercial payers cover occupational therapy billing in Washington?

All major national commercial payers cover occupational therapy 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 occupational therapy billing providers in Washington?

Yes. ASP-RCM Solutions provides occupational therapy billing services for providers in Washington and across all 50 states. Senior partners on every account. Request a free 30-day audit.

How do I get started?

Request a free 30-day RCM audit. We assess your current state, identify revenue leakage, and produce a written prioritized recommendations list.

Free 30-day audit for Washington occupational therapy billing 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