Medical Billing Services for U.S. Practices

Service scope

What medical billing support can include

Medical billing is not one isolated submission task. It is a chain of handoffs between the practice, billing team, clearinghouse and payer. An ERG engagement can be scoped around the full workflow or selected functions, with responsibilities documented before onboarding.

Claim preparation and validation: organize billing inputs and check required claim information before transmission.
Electronic claim submission: transmit agreed claim types through the approved practice-management system or clearinghouse.
Rejection correction: review front-end responses, identify the rejected data element and route corrections to the appropriate owner.
Denial follow-up: categorize payer adjudication outcomes and work the next action under the agreed denial-management process.
Payment posting and exceptions: apply remittance information within scope and flag mismatches, missing remittances or unresolved balances for review.
A/R follow-up: organize outstanding balances by age, payer, status and next action under the agreed accounts-receivable workflow.
Operational reporting: summarize work queues, exceptions, ownership and next actions using definitions agreed with the practice.

Eligibility verification, prior authorization, coding, credentialing, patient statements and older A/R are separate functions unless they are expressly included in the engagement.

Responsibility matrix

Practice, ERG and payer responsibilities

A written responsibility matrix reduces gaps and duplicate work. A typical discovery conversation separates the following roles; the final agreement controls.

The practice provides and approves

Accurate patient, insurance and provider information
Complete, timely clinical documentation and charge authorization
Policies for coding, authorization, patient balances and write-offs
Role-based access to approved systems and a contact for exceptions

ERG performs the agreed billing work

Uses the approved systems and documented workflow
Works assigned claim, rejection, denial, posting and A/R queues
Records actions and escalates missing information or decisions
Reports the measures and open items included in scope

The payer or clearinghouse determines

Transaction acceptance and front-end edits
Coverage, benefits and payer-specific policy application
Adjudication, payment, adjustment, denial and appeal outcomes
Response formats, portal processes and processing timeframes

Important: eligibility, authorization, claim acceptance or submission does not guarantee coverage or payment.

Workflow

How a medical claim moves through the billing process

Intake and access. Confirm locations, providers, payers, claim types, systems, user roles, work queues and escalation contacts.
Billing inputs. Receive the practice-approved patient, insurance, documentation, charge and coding information required for the assigned work.
Pre-submission checks. Review required fields, identifiers and workflow-specific edits. Items that need clinical, coding or practice decisions return to the designated owner.
Electronic transmission. Send the approved transaction through the configured EHR, practice-management system or clearinghouse. CMS describes EDI as data transferred in a specific format under specific content rules.
Acknowledgments and rejections. Monitor available transaction responses, correct issues within billing scope and escalate missing or inconsistent source information.
Payer adjudication. The payer applies coverage, contract and claim-processing rules. A paid, adjusted or denied result is different from a clearinghouse rejection.
Remittance and posting. Use available electronic or paper remittance information to post payments and adjustments within scope, then flag exceptions for reconciliation.
Denial and A/R action. Assign a documented next action, owner and follow-up date. Existing aged A/R can remain a separate inventory so current billing is not obscured.
Reporting and improvement. Review trends, unresolved items and handoff failures using consistent definitions rather than treating every open balance as collectible revenue.

For Medicare fee-for-service claims, CMS's current Chapter 1 manual is Revision 13826, issued June 11, 2026. Commercial, Medicaid and Medicare Advantage requirements vary by payer, product, jurisdiction and effective date, so payer-specific rules must be verified for the claim in question.

Reporting

What useful medical billing reporting should show

A report should help the practice decide what happens next. During onboarding, ERG and the practice can define a reporting view that fits the engagement. Depending on scope and available system data, it can include:

Claims submitted, accepted, rejected and awaiting correction
Denial categories, responsible owner and next action
A/R by age band, payer, provider or location
Payment-posting exceptions and unresolved remittance items
Work completed, items blocked by missing information and escalations

Definitions matter. A clearinghouse acceptance is not a payer payment; a posted payment is not automatically a bank reconciliation; and an unpaid balance is not automatically recoverable. The Revenue Lab provides no-PHI workflow checkups and a fictional sample report for evaluating reporting questions before a consultation.

Onboarding

Information to prepare before medical billing starts

Legal entities, billing providers, rendering providers, locations and NPIs relevant to scope
Payer list, product mix, enrollment status and approved payer-portal access
EHR, practice-management, clearinghouse and remittance workflows
Current work queues, open rejections, denials and A/R inventories
Practice policies for coding, write-offs, appeals, patient balances and escalations
Named owners for documentation questions, access, payer issues and financial decisions
Reporting definitions, cadence and recipients

Access should be role-based and limited to the work being performed. HHS explains that business-associate agreements must define permitted and required uses of protected health information and applicable safeguards. HHS also requires reasonable efforts to limit PHI use, disclosure and requests to the minimum necessary for the intended purpose, subject to the rule's exceptions.

Review ERG's security and access questions →

Fit and boundaries

Questions to settle before selecting a billing company

Which services, specialties, locations and payer products are included?
Who owns coding, clinical documentation, authorization and patient communication?
Which systems will be used, and who controls administrator access and data export?
How are old A/R, pre-start claims and work already assigned to another vendor separated?
Which measures will be reported, and how are their numerators, denominators and date ranges defined?
What requires practice approval, and how quickly must each side respond?

ERG does not promise payer payment, a particular processing time or a universal financial result. Federal and payer guidance changes, and claim outcomes remain dependent on the facts, documentation, coding, enrollment, coverage, contract and applicable policy.

OIG's General Compliance Program Guidance is voluntary and nonbinding, but it is a useful reference for evaluating compliance infrastructure, responsibilities and monitoring. Practices should obtain qualified legal, coding or compliance advice for decisions that require it.

Common questions

Questions about this service

What can ERG medical billing services include?

An engagement can include claim preparation and submission, rejection correction, denial follow-up, payment posting, A/R follow-up and operational reporting. The signed scope identifies the included work, systems and handoffs for the practice.

Can ERG work in our existing EHR or practice-management system?

ERG can evaluate a practice's existing EHR, practice-management system, clearinghouse and payer portals during discovery. Access, compatibility, testing and permitted workflows must be confirmed before work begins.

Can a practice outsource only part of medical billing?

Yes. A practice may keep some work in-house and define a narrower engagement for functions such as denial management, payment posting, eligibility verification or aged A/R follow-up.

How does ERG report medical billing work?

The reporting plan is set during onboarding. Depending on scope, it can cover submission and rejection status, denial categories, A/R work queues, payment-posting exceptions, unresolved items and assigned next actions.

Does claim submission guarantee payment?

No. Payment depends on coverage, eligibility, authorization, coding, documentation, contract terms, timely filing and payer adjudication. A submitted or accepted claim is not a payment guarantee.

How is protected health information handled?

Access and data handling must be defined before onboarding. When a billing vendor is acting as a HIPAA business associate, the required agreement, permitted uses, safeguards and incident obligations should be documented.

Does ERG publish medical billing prices?

No. ERG does not publish rates or packages because pricing is customized to the practice's services, systems, volume and requested scope. Submit the online form to request pricing.

Can ERG review existing unpaid claims?

Existing A/R may be evaluated as a separate workstream. Age bands, prior actions, filing limits, ownership, exclusions and reporting should be agreed before follow-up begins.

Current primary references

Sources used for this service overview

CMS: Electronic Billing & EDI Transactions — page last modified September 10, 2024.
CMS Medicare Claims Processing Manual, Chapter 1 — Revision 13826, issued June 11, 2026.
HHS Office for Civil Rights: Business Associates.
HHS Office for Civil Rights: Minimum Necessary.
HHS OIG: General Compliance Program Guidance — voluntary, nonbinding guidance.

Sources reviewed September 25, 2026. This page is general operational information, not legal, coding or payer-specific advice.

Define the right billing scope for your practice

Tell ERG which services, systems, payers and work queues are in scope. Pricing is provided privately after the workflow is understood.

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Medical Billing Services for U.S. Healthcare Practices