Medical billing is the process of submitting and managing healthcare claims to obtain payment for medical services provided to patients. It’s how healthcare practices connect the care they deliver to the insurance companies and patients who pay for it.
But medical billing is more than sending a claim and waiting for a check. A complete medical billing process includes collecting patient information, verifying insurance, applying medical codes, submitting claims, posting payments, and following up on denials or unpaid balances. Understanding how this cycle works helps practices see where revenue can be lost — and where a medical billing service can help recover it.
What Is Medical Billing?
Medical billing is the process healthcare providers use to translate a patient encounter into a claim, submit that claim to a payer, and collect payment for the services rendered.
After a healthcare service is provided, the visit doesn’t end at checkout. Patient information and insurance details are recorded, and the diagnoses and procedures performed during the visit are translated into standardized medical codes. Those codes, along with charge information, are compiled into a claim and submitted to the appropriate insurance company or payer.
Once the payer reviews the claim, it may be paid in full, paid in part with an adjustment, or denied. Payments are then posted to the patient’s account, and any remaining balance — whether from the payer or the patient — is tracked until it’s resolved. This entire sequence, repeated for every encounter, is what makes up the medical billing process for a healthcare practice.
What Is the Medical Billing Process?
The medical billing process is typically broken into a series of steps that move a claim from patient visit to final payment.
1. Patient Registration and Information Collection
The process begins with collecting demographic information, insurance information, and other patient details, such as name, date of birth, contact information, and policy numbers. Accurate collection at this stage sets the foundation for everything that follows.
2. Insurance Eligibility and Benefits Verification
Before or around the time of service, a practice should verify that a patient’s insurance is active and confirm what benefits apply. This helps prevent claim denials that result from coverage issues discovered after the visit.
3. Medical Coding
Diagnoses and procedures performed during the visit are translated into standardized medical codes. These codes tell the payer exactly what was diagnosed and what services were provided.
4. Charge Entry and Claim Preparation
Charges for each service are entered into the billing system, and the claim is prepared with the appropriate codes, provider information, and patient details.
5. Claim Submission
The completed claim is submitted to the appropriate payer, often electronically, to begin the review process.
6. Claim Adjudication
The payer reviews the claim and determines whether to pay it in full, pay it with an adjustment, or deny it based on coverage and coding accuracy.
7. Payment Posting
Once a decision is made, payments and adjustments are recorded in the patient’s account, reflecting what the payer covered and what, if anything, remains.
8. Denial Management and A/R Follow-Up
When claims are denied, underpaid, or left unpaid, the billing team follows up — correcting errors, appealing denials, or contacting patients about remaining balances until the account is resolved.
What Is the Medical Billing Cycle?
While the medical billing process describes the individual steps involved, the medical billing cycle describes how those steps connect and repeat over time.
A simple version of the cycle looks like this:
Patient Registration → Eligibility Verification → Coding → Charge Entry → Claim Submission → Payer Adjudication → Payment Posting → Denial Management → A/R Follow-Up
The cycle isn’t always a straight line. If a claim is denied, it may need to be corrected, resubmitted, or appealed — sending it back through part of the cycle before it’s finally resolved. That’s why ongoing denial management and accounts receivable follow-up are considered part of the cycle rather than a separate, one-time task.
What Are the Different Types of Medical Billing?
Medical billing isn’t a single, uniform process — it varies depending on the type of provider and setting involved.
Professional Billing
Professional billing covers billing associated with physicians and other individual healthcare professionals for the services they personally provide.
Institutional Billing
Institutional billing applies to hospitals and other institutional healthcare settings, covering the facility-related costs of care.
Outpatient Billing
Outpatient billing applies to services provided without an inpatient admission, such as office visits or same-day procedures.
Inpatient Billing
Inpatient billing applies to services provided during a hospital stay, typically involving more complex coding and documentation.
Billing requirements can vary depending on the provider, specialty, payer, and type of service, which is why practices often need billing support tailored to their specific setting.
What Is ERA in Medical Billing?
ERA stands for Electronic Remittance Advice. An ERA provides information from a health plan about how a submitted claim was processed, including payment and adjustment details, and it uses standardized codes to explain those adjustments, according to the Centers for Medicare & Medicaid Services (CMS).
ERA information plays a direct role in payment posting — billing teams review it to understand exactly how each claim was handled, identify any adjustments, and determine what portion of a balance, if any, is the patient’s responsibility.
It’s worth noting the difference between ERA and EFT: an ERA tells the provider how the claim was processed, while an Electronic Funds Transfer (EFT) is what actually transfers the payment. CMS identifies the X12 835 (Version 5010) as the adopted standard for ERA transactions.
What Does a Medical Billing Specialist Do?
A medical billing specialist is responsible for managing the day-to-day tasks that keep the billing process moving. Their responsibilities typically include preparing and submitting claims, posting payments, following up on denials, and managing accounts receivable.
Billing specialists also review payer responses, maintain accurate billing records, and communicate with practices and payers to resolve billing issues as they arise. They serve as the connective tissue between the clinical side of care and the financial side of a practice, helping ensure that claims are handled accurately and promptly.
What Does a Medical Billing Company Do?
Practices generally handle medical billing in one of two ways: in-house or outsourced.
With in-house billing, the practice manages billing internally using its own staff and systems. With outsourced medical billing, a third-party medical billing company manages some or all billing functions on the practice’s behalf.
Practices often choose to outsource to reduce administrative workload, gain access to specialized billing expertise, and improve claim management, denial follow-up, payment posting, and A/R management — all while gaining scalability as the practice grows.
A medical billing company such as Spark Billing Network can support healthcare practices with billing, coding, claims, patient billing, payment posting, denial management, and related revenue cycle activities.
What Is a Medical Billing Service?
A medical billing service can cover different stages of the revenue cycle rather than simply handling claim submission. Depending on a practice’s needs, a medical billing service may include eligibility verification, claims submission, payment posting, denial management, A/R follow-up, patient billing, and reporting.
Because these services can be scoped to a practice’s specific gaps — whether that’s just claims and coding or full revenue cycle support — they offer flexibility that in-house teams may not have the bandwidth to provide. Learn more about Medical Billing Services from Spark Billing Network.
What Is Medical Billing Data Entry?
Medical billing data entry involves entering and maintaining the information needed for accurate billing and claim processing. This includes patient demographics, insurance details, provider information, procedure and charge information, diagnosis information, and payment information.
Accurate data entry matters because errors in patient, insurance, or billing information can contribute to claim processing problems and administrative rework. A careful billing data entry process at the start of the cycle helps prevent avoidable delays later on.
Why Is Accurate Medical Billing Important?
Accurate medical billing supports nearly every part of a practice’s financial health. It leads to accurate claims and more timely reimbursement, while reducing avoidable errors that can slow down payment.
Accuracy also supports better payment tracking, clearer patient balances, and more effective accounts receivable management. Over time, this contributes to more organized revenue cycle operations overall — helping practices spend less time chasing corrections and more time focused on patient care.
When Should a Practice Consider Outsourcing Medical Billing?
Outsourcing isn’t the right fit for every practice at every stage, but there are common signs it may be worth considering:
- Billing workload is increasing faster than staff capacity
- Staff are spending too much time on claims instead of patient care
- Denials require more follow-up than the team can manage
- Accounts receivable is becoming difficult to track and collect
- The practice is expanding into new services or locations
- Administrative workload is affecting day-to-day operations
- The practice needs specialized billing support for a particular specialty or payer mix
- If several of these sound familiar, it may be time to explore support from a dedicated medical billing partner.
Simplify Your Medical Billing Process With SBN
Spark Billing Network supports healthcare practices across the full revenue cycle — including medical billing, medical coding, patient billing, claims management, payment posting, denial management, and A/R follow-up. Whether you need help with one part of the process or the entire cycle, SBN can help reduce administrative burden and keep your revenue cycle running smoothly.
Explore SBN’s Medical Billing Services
