ASC Specialty Coding Areas Covered
Clean Claim Rate
Years in U.S. Medical Billing
ASCs without strong Covered Procedures List and modifier controls commonly lose 10 to 20% of revenue to non-covered procedure denials, missed implant HCPCS pairing, and place-of-service errors that reprice claims at lower OPPS rates. Most of it traces back to a small number of recurring coding decisions, which is exactly where specialty-specific billing pays for itself.
Where ASC billing actually goes wrong
ASC billing, done right
The coding decisions that cause most ASC denials, handled by billers who know the specialty, not just the CPT book.
Covered Procedures List Verification
Every CPT code billed has to appear on CMS's ASC Covered Procedures List, and this requirement applies even when the same procedure is covered in a hospital outpatient setting. Because the list updates regularly, we verify each procedure against the current CPL before submission, not just during initial credentialing.
Facility vs. Professional Claim Separation
Since an ASC bills only for facility resources while the surgeon bills separately for professional services, mixing the two into one claim causes immediate confusion and denials. We keep facility and professional billing correctly separated so both claims get paid without triggering duplicate-claim flags.
Multiple Procedure Reduction Accuracy
When multiple procedures happen in the same operative session, the highest-valued procedure pays at full rate while each additional procedure pays at half rate. Therefore, we sequence and code multi-procedure cases correctly so the practice captures full reimbursement on every eligible line.
Implant & Device HCPCS Pairing
High-cost implants like joint components and spinal hardware often qualify as separately payable, but only when paired with the correct HCPCS code alongside the primary CPT. Since missing this pairing means the ASC absorbs the cost, we track implant documentation and billing as a dedicated step in every applicable case.
Place-of-Service Accuracy
Billing with the wrong place-of-service code can cause a claim to reprice under hospital outpatient rates instead of ASC rates, and this mistake often goes unnoticed until payment posts short. We apply POS 24 correctly on every freestanding ASC claim so pricing lands where it should.
Prior Authorization & NCCI Bundling Review
Because missing or expired prior authorizations rank among the most common ASC denial causes, we verify authorization status before the case is scheduled, not after. In addition, we check NCCI bundling edits so legitimate add-on procedures still get reimbursed instead of denied.
ASC-specific, not generalist
Billers who know cath lab bundling rules
A biller who treats every specialty the same way will bill an ASC claim like a physician office visit, and then never understand why the facility payment came back short. Since ASC revenue leaks rarely sit in one place, they instead spread across Covered Procedures List gaps, implant pairing errors, and place-of-service mistakes that most billers never learn to check. Ultimately, treating ASC billing like standard procedural billing is exactly where the revenue disappears.
Talk to a specialistCaught before submission
Fewer denials, faster reimbursement
ASCs without strong front-end controls commonly see first-pass denial rates of 12 to 20%, driven largely by non-covered procedure billing, expired prior authorizations, and multiple-procedure sequencing errors. Because we catch these before the claim goes out rather than after the denial comes back, practices see cleaner claims from the first submission.
See how it works
What we hold ourselves to
Our values, in practice
Intake & Systems Review
We audit current Covered Procedures List compliance and implant billing workflows.
Charge Capture & Coding
Each case gets coded to correct facility CPT, HCPCS pairing, and place-of-service.
Claims Scrubbing
Claims run through payer-specific and NCCI edits before submission.
Submission & Tracking
Clean claims go out daily, and every claim gets tracked to resolution.
Denial Management
Denials get corrected and resubmitted within payer timely-filing windows.
Authorization & Implant Monitoring
Prior authorizations and implant documentation get tracked case by case to prevent lapses.
Reporting
Monthly reports show clean claim rate, denial trends, and days in A/R by procedure category.
Questions, answered
ASC billing, answered
What ASC practices ask most before switching billing partners.
What makes ASC billing different from physician billing?
ASC billing covers only the facility resources behind a procedure, such as the operating room, staff, and supplies, while the surgeon submits a completely separate professional claim under their own NPI. Because both claims can be submitted for the same date of service without triggering a duplicate denial, understanding this separation is fundamental to billing an ASC correctly.
Why do ASC claims get denied for covered procedures that seem clinically appropriate?
Every CPT code billed at an ASC has to appear on CMS's ASC Covered Procedures List, and this requirement exists independently of whether the procedure is covered in a hospital outpatient setting. When a procedure isn't on that list for the ASC setting specifically, the claim denies regardless of clinical appropriateness.
How does the multiple procedure reduction work in ASC billing?
When multiple procedures happen in the same operative session, CMS pays the highest-valued procedure at full rate while each additional procedure pays at fifty percent. Since this reduction applies automatically, correct sequencing and coding directly determine how much of the case gets reimbursed.
Are implants and devices billed separately from the procedure itself?
High-cost implants like joint components and spinal hardware often qualify as separately payable, but only when billed with the correct HCPCS code alongside the primary procedure code. Missing this pairing means the ASC absorbs the implant cost instead of receiving reimbursement for it.
Why does place-of-service coding matter so much for ASC claims?
Billing with the wrong place-of-service code can cause a claim to reprice under hospital outpatient rates instead of the correct ASC rate, and this often results in underpayment that isn't obvious until the remittance posts. Using POS 24 correctly on freestanding ASC claims keeps pricing aligned with the right payment system.
What denial rate should an ASC expect?
A well-run ASC billing operation should see a denial rate under 7%, with first-pass clean claims above 93%. ASCs without strong Covered Procedures List and prior authorization controls commonly see denial rates well above that, since these two issues account for the majority of preventable ASC denials.
Find out how much revenue
your practice is leaving on the table.
Get a free, no-obligation revenue audit. We'll analyze your billing and show you the exact dollars you could be collecting.
No contracts to review. No pressure. Just numbers.