Wrong payer ID, transposed member number, or misspelled subscriber name leads to claim rejection at submission; delays revenue 30+ days.
A misspelled name, transposed DOB, or wrong address causes CARC 16 denial; payer cannot match to subscriber. "Collected but wrong" equals same outcome as "never collected."
Services rendered without authorization are denied retroactively; non-recoverable write-off.
Aging A/R increases; patient disputes at collections stage.
Claim billed under wrong NPI/TIN or place of service → CARC 185 denial.
Payer cannot match claim to policy; subscriber name misspelled means the relationship link breaks.
Claim sent to wrong payer; OA-23 denial (COB issue); double billing compliance risk.
Cannot bill patient for non-covered services; compliance liability.
Claim sent to health insurance instead of liability carrier; recoupment later.
Patients misspell their own names or give nicknames. "Kathy" vs "Katherine" — the payer doesn't know your patient's nickname.
One wrong character cascades through eligibility, claims, and payment. A single transposed digit denies every claim for that patient.
When a claim denies for subscriber mismatch, staff has no source document to compare against; must call patient or payer to re-verify.
Insurance changes, name changes, address changes happen between visits. Stale data from 6 months ago causes today's claim to deny.
Services rendered to terminated or inactive policies; total revenue loss on that encounter.
Staff doesn't understand rejections; patient seen anyway without coverage confirmation.
Visit billed to wrong benefit type; payer denies as out-of-network or not covered.
Point-of-service collections drop; increases patient A/R and cost to collect.
Claim denied for no auth on file; retrospective auth often denied; total write-off.
Auth exists but isn't on the claim; denied anyway — avoidable rework.
Services rendered after auth expires; payer denies all post-expiration claims.
Downcoded by payer audit; recoupment; compliance risk for upcoding.
Charge capture gap — services rendered but never billed; silent revenue loss.
Unspecified codes trigger edits or denials; LCD/NCD non-compliance.
Claim submission delayed; approaches timely filing limits; incomplete charge capture.
CCI edit denials; OIG audit exposure; modifier -25, -59 errors are top denial reasons.
Medical necessity denial; payer sees no clinical justification for procedure.
Reimbursement at wrong rate; facility vs. non-facility payment differential can be 40%+.
Revenue leakage; average practice loses 5–10% of revenue to missed charges.
Payer enrollment blocked; cannot bill until credentialing complete; pre-revenue gap.
Payer pulls enrollment; re-credentialing delays.
NPI mismatch between claim and payer file = automatic rejection.
CARC 185 denials; days 0 to enrollment = zero revenue for that provider/payer combo.
Under-billing or overpayment recoupments; cannot identify underpayments on remittance.
No visibility into pre-revenue gap; provider sees patients but practice eats the cost.
Claim rejected at clearinghouse level; silent rejection — never reaches payer.
Preventable denials; industry avg 5–10% initial denial rate, most are scrub-catchable.
CARC OA-18 denials; payer flags practice for duplicate billing patterns.
Claim filed past deadline; CO-29 denial; 100% write-off with no appeal rights.
Manual entry errors; unstructured data cannot be validated programmatically.
Front-end rejection before claim ever reaches adjudication; no denial generated — claim vanishes silently.
Payer attributes service to wrong provider; CARC 185 if rendering provider not enrolled.
One wrong digit and payer cannot locate the policy; CARC 27 denial.
CARC 16 — #1 preventable denial. A DOB entered incorrectly denies every time.
Claim routed to wrong processing queue; returned as "payer not found."
Denial for service outside coverage period; often non-recoverable.
Some payers reject without group number; others route to wrong benefit plan.
Payment held or sent to wrong address; 1099 mismatch; IRS compliance issue.
Corrected claim treated as duplicate; voided claim not processed.
Lower-paying code denied as inclusive of higher-paying code; or both denied for improper unbundling.
Entire line denied or paid at reduced units; appeal required.
Denial for "not medically necessary" (CARC 50); requires clinical appeal.
E/M denied when billed same day as procedure; or audit triggers for modifier -25 overuse.
Bundled code denied; if overused, triggers OIG audit for modifier -59 abuse.
Post-op visit denied as included in surgical global period; 10/90-day window revenue loss.
Automatic rejection at clearinghouse; flags practice for data quality issues.
Drug claims denied for missing NDC; Medicaid plans especially strict.
Revenue code / CPT mismatch denial; common on outpatient facility claims.
Payer adjudicates based on primary DX; may deny if it doesn't justify the service.
Line rejected for "missing diagnosis" or paid incorrectly because wrong DX was linked.
Payer returns for more specific code; some payers auto-deny unspecified codes entirely.
Facility vs. non-facility rate differential can be 40–60%; wrong POS = wrong reimbursement.
Telehealth visit denied or paid as in-person at wrong rate; rules vary by payer and state.
Denial for missing ordering provider; Medicare requires ordering NPI on all diagnostic tests.
Incident-to claim denied; some payers require supervising physician NPI for NP/PA services.
Payer uses billing address as service location; may deny for out-of-network pricing.
Cannot bill Medicare patient for denied services without ABN; compliance violation.
Negative payment adjustment up to -9% on all Medicare claims for the performance year.
State Medicaid rules differ dramatically; what works in one state causes denials in another.
Service denied as "not a covered benefit"; bill sent to wrong entity.
Claim rejected; WC and auto require different data elements than standard claims.
Claim denied for "invalid modifier" even though the service was performed correctly.
High-value claim denied for preventable error; cost of rework is amplified.
First impression with payer sets the tone; incorrect data creates recurring denial pattern.
Claims aging in unbilled status; timely filing clock running; revenue delayed.
Slow submission compresses follow-up window; claim ages before adjudication.
Auth exists in your system but never makes it onto the 837; payer denies for "no auth on file."
Claim pends for additional information; payer sends Development Letter delaying payment 30–60 days.
Payer treats corrected claim as duplicate or new claim; original remains unpaid.
Systemic errors go undetected; same mistake repeated across hundreds of claims.
Rejected claims sit in limbo; timely filing clock is still running.
Secondary revenue never collected; average 8–15% of total revenue in multi-payer scenarios.
Claims silently dropped from batch; no denial generated — just missing revenue.
Manual posting errors; adjustments applied to wrong claims; A/R integrity compromised.
Payer quietly pays below contracted rate; practice absorbs the shortfall unknowingly.
Patient never billed for their portion; coinsurance/deductible revenue lost.
Posting imbalance; unidentified money in system; audit trail broken.
Unmatched deposits; cannot prove which claims were paid in which deposit.
Payer claws back money and it's written off without review; often recoupments are disputable.
Recoverable denials treated as write-offs; money left on the table.
Billing team works denials they can't resolve; credentialing issues sit unworked.
Staff wastes time appealing patient responsibility or contractual write-offs.
Appeal rights expire; recoverable claim becomes permanent write-off.
Same denials repeat month over month; systemic issues never addressed.
Claims age past timely filing; probability of collection drops 50% after 90 days.
Patient collection rates drop significantly after 60 days; increases bad debt.
Revenue silently disappears; embezzlement risk; no accountability on adjustments.
False Claims Act exposure; payer audit findings; state regulatory penalties.
A summary of your audit findings across all 7 phases of the patient-to-payment lifecycle.
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