What Is a Superbill in Medical Billing? Fields, Uses and Rules for 2026
A superbill is an itemized visit summary listing provider and patient details, the date of service, CPT procedure codes, ICD-10-CM diagnosis codes and charges. Patients submit a superbill to an insurer to request reimbursement, usually for out-of-network care. A superbill is not a claim form, and practices do not send one to a payer in […]
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Payment Posting in Medical Billing: Steps, Adjustment Codes and Accuracy Targets for 2026
Payment posting in medical billing is the process of recording insurance and patient payments, contractual adjustments and denials against the correct claim and service line in the practice management system. Posting uses remittance advice to update balances, trigger patient billing and flag denials for follow-up, so accounts receivable reflects what is actually owed. Every dollar […]
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Net Collection Rate vs Gross Collection Rate: Formulas, Benchmarks and Which One to Trust
Net collection rate vs gross collection rate comes down to the denominator: gross collection rate divides payments by total billed charges, while net collection rate divides payments by charges minus contractual adjustments. Gross rate reflects fee schedule and contracts, and net rate shows how much collectible revenue a practice actually collected. A practice that collects […]
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Medical Claim Scrubbing and Clean Claim Rate: How They Work Together in 2026
Medical claim scrubbing is the automated review of a claim against coding, payer and format rules before submission, and clean claim rate is the percentage of submitted claims that pass without rejection, denial or a request for more information. Scrubbing is the process; clean claim rate is the scorecard that shows whether the process works. […]
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CPT vs HCPCS vs ICD-10 Differences: A Practical Guide for 2027 Claims
ICD-10-CM reports why a patient was seen, CPT reports what a clinician did, and HCPCS Level II reports drugs, supplies and services that CPT does not describe. A claim line pairs a diagnosis from ICD-10-CM with a procedure from CPT or HCPCS. Each code set has a different owner, format and update schedule. The CPT […]
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UB-04 vs CMS-1500: Which Claim Form Fits Your Practice in 2026?
The UB-04, also called the CMS-1450, is the institutional claim form that hospitals, nursing facilities and clinics such as rural health centers use to bill facility charges. The CMS-1500 is the professional claim form that physicians, practitioners and suppliers use to bill clinician services. Electronic claims mirror the split: 837I for institutional, 837P for professional. […]
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Secondary Insurance Billing and Coordination of Benefits: Who Pays First, How Much and What to Submit in 2026
Secondary insurance billing is the process of submitting the balance left after a primary payer pays to a patient’s second health plan. Coordination of benefits (COB) rules decide which plan pays first and cap combined payment, so the two plans together never pay more than the covered amount. Who pays first when a patient has […]
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CARC and RARC Codes Explained: How to Read Every Line of a Remittance
CARC and RARC codes explained in one passage: a claim adjustment reason code (CARC) states why a payer paid less than the billed amount, and a remittance advice remark code (RARC) adds detail or a next step. Every CARC travels with a group code (CO, PR, OA or PI) that assigns financial responsibility on the […]
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CO-29 Denial Code (Timely Filing): Deadlines, Proof and Prevention
The CO-29 denial code is a claim adjustment reason code (CARC 29) that tells a provider the payer received the claim after its filing deadline: “The time limit for filing has expired.” The CO group code puts the loss on the provider, so the balance cannot be shifted to the patient. Review note: filing limits […]
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CO-197 Denial Code (Prior Auth): Causes, Recovery Routes and 2026 Payer Rules
The CO-197 denial code is a claim adjustment reason code (CARC 197) that tells a provider the payer found no required precertification, authorization, notification or pre-treatment approval for the billed service. Group code CO makes the provider responsible, so the practice must correct, obtain retro approval for, appeal or write off the claim. Review note: […]
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