13 guides
Working in billing & claims
Revenue cycle, claims, denials, appeals, eligibility, prior authorization, and payer rules.
Working in billing & claims
The revenue cycle starts before a claim exists. Scheduling, eligibility and registration create the demographic and coverage facts that later determine whether a perfectly coded service can be billed cleanly.
Working in billing & claims
The paper CMS-1500 form is best learned as a visual model of professional-claim data, even when the real submission is an electronic 837P. NUCC maintains the 1500 form and publishes a crosswalk that maps form items to 837P data elements.
Working in billing & claims
A denial code is a direction to investigate, not a complete diagnosis. Start with the group code, CARC, RARC, payer message, claim history and policy before choosing a correction or appeal.
Working in billing & claims
A claim appeal is a documented argument that an adjudication should change. The best letters are short enough to audit: identify the patient and claim, state the disputed service and denial, cite the applicable policy, show how the record meets it, and list the attachments.
Working in billing & claims
Timely filing is not a universal number. Every biller should know where the deadline lives for each payer: statute or program rule, provider manual, network agreement, or plan policy.
Working in billing & claims
Prior authorization starts with a coverage question: does this exact payer, plan, service, diagnosis context, site of care and date require authorization? A rule for one product cannot be assumed for another product carrying the same insurer logo.
Working in billing & claims
Eligibility verification asks whether coverage and benefits are reported for a member and service context at a point in time. It is not a guarantee that the payer will pay a future claim.
Working in billing & claims
Coordination of benefits is the discipline of identifying which coverage pays first and what information the secondary payer needs from the primary adjudication. It is not “bill whichever card looks newest.”
Working in billing & claims
A rejection happens before payer adjudication; a denial happens after the payer has processed the claim. That distinction decides whether you should correct a transaction or argue with an adjudication.
Working in billing & claims
Modifiers add information to a procedure/service code; they are not universal denial-removal switches. The documentation and the clinical circumstances must support the modifier’s meaning.
Working in billing & claims
Medical necessity is a coverage concept, not a synonym for “the clinician wanted the service.” A payer may require that the patient’s diagnosis, symptoms, history, test results, frequency and prior treatment meet defined coverage criteria.
Working in billing & claims
Patient collections begins with a correct patient balance. Before a statement goes out, insurance adjudication, contractual adjustments, prior payments, refunds, financial-assistance decisions and secondary coverage should be reconciled.
Working in billing & claims
HIPAA is part of billing and credentialing because both jobs routinely touch protected health information. You do not need to become a privacy lawyer, but you do need to recognize when your workflow exposes more information than the task requires.