7.1 Patient Access & Charge Capture

Why Patient Access Matters

Quick Answer: Patient access is the registration and verification stage of the revenue cycle. Industry studies attribute roughly half of all claim denials to front-end errors — wrong demographics, expired coverage, or missing authorization. Fixing these issues at registration is far cheaper than appealing a denial later.

The revenue cycle begins before a patient is even seen. Patient access (front-end registration) collects the data every downstream billing step depends on. A single transposed policy number, an outdated plan, or a misspelled last name can become a rejected claim, a delayed payment, and an unhappy patient. The Certified Professional Biller (CPB) exam — 135 questions, 4 hours, 70% to pass — repeatedly tests these front-end concepts because they prevent denials at the cheapest possible point.

Registration Data

At registration the biller or front-desk staff must capture and verify:

• Demographics — legal name, date of birth, sex, address, and phone, all matching the payer's enrollment record exactly.
• Guarantor — the person financially responsible (often the patient; a parent for a minor; a spouse for a dependent).
• Insurance details — payer name, plan, member ID, group number, and the patient's relationship to the subscriber (self, spouse, child, other).
• Subscriber data — when the patient is not the policyholder, the subscriber's name, DOB, and ID are needed for the claim.

The Master Patient Index (MPI) is the facility's authoritative list of every patient and their unique medical record number (MRN). A clean MPI prevents duplicate records (one patient entered twice) and overlays (two patients merged into one record) — both scramble clinical and billing data and trigger denials.

Eligibility Verification: 270/271

Electronic eligibility verification uses two paired HIPAA X12 transactions:

Worked example: A patient presents for a procedure on June 13. The biller sends a 270 with the member ID and date of service. The 271 returns: policy active, $1,500 deductible with $400 met, 20% coinsurance, and "prior authorization required for advanced imaging." The biller now knows to collect an estimate, verify the auth, and flag the remaining deductible. Verifying eligibility confirms the policy is active on the date of service, exposes cost-sharing, and reveals authorization rules.

Prior Authorization

Prior authorization (precertification) is the payer's advance approval for a planned service. Without it, an otherwise covered service is denied (often CARC CO-197 / CO-15). Billers record the authorization number, the approved CPT/HCPCS codes, the number of approved visits or units, and the valid date range, then report the number on the claim. A common trap: an auth approved for 6 physical-therapy visits does not cover visit 7 — track unit consumption.

Insurance Card & Point-of-Service Collection

Reviewing the insurance card (front and back) confirms the payer ID, the claims address or electronic payer ID, and customer-service numbers. Collecting the copay at time of service (TOS) improves cash flow and avoids the cost of billing later. Financial counseling helps uninsured or high-balance patients understand estimates, set payment plans, or apply for charity care. The federal No Surprises Act also requires a good-faith estimate for self-pay/uninsured patients before scheduled care.

Medicare Secondary Payer (MSP) Questionnaire

Medicare is not always primary. The MSP questionnaire, completed at registration, screens for situations where another payer must pay first:

Billing Medicare primary when it should be secondary creates an overpayment and a compliance risk. The questionnaire is repeated periodically because a patient's work or coverage status changes.

Charge Capture

Charge capture records every billable service performed during an encounter. Charges flow from the encounter form / superbill (a checklist of common CPT/ICD codes) or directly from the EHR charge module into the practice management system. Lost charges are permanently unbilled revenue — a missed injection, a forgotten supply, an unposted after-hours visit — so reconciling the appointment schedule against captured charges every day is best practice. The charge description master (CDM), used on the facility side, is the master price/code list that drives institutional charge capture.

Front-End Best Practices and Common Traps

Because front-end errors drive roughly half of avoidable denials, billers and registration staff should treat patient access as a quality-control gate, not a clerical step. Build a registration checklist, scan both sides of the insurance card, and re-verify eligibility for every return visit — coverage that was active in January can lapse by March. Confirm the subscriber versus the patient relationship carefully, because billing a dependent under the wrong subscriber ID is a frequent registration denial. Always capture a secondary payer when one exists so coordination of benefits is set up correctly from the start.

Watch these recurring traps the CPB exam likes to probe:

• Assuming Medicare is primary for a working 67-year-old at a large employer — it is secondary.
• Treating an eligibility check run yesterday as valid for today's service date.
• Reporting a service with no authorization when the 271 flagged one as required.
• Letting after-hours, injection, or supply charges fall through and never reach the claim.

A disciplined patient-access process produces a higher first-pass clean-claim rate, faster payment, fewer patient-billing surprises, and a far lower cost to collect than fixing the same problems through appeals downstream.