Direct answer: Professional billing reports services performed by physicians and other qualified healthcare professionals, generally using the electronic 837P claim or paper CMS-1500 form. Institutional billing reports services and resources furnished by hospitals and other facilities, generally using the electronic 837I claim or paper CMS-1450, commonly called the UB-04. A single patient encounter may generate both types of claims.
Last reviewed: August 2026. This article provides general billing information and is not legal, coding, or payer-specific advice.
What Is Professional Billing?
Professional billing covers the work performed by an individual physician, nonphysician practitioner, or other eligible professional supplier. It is sometimes called physician billing.
Professional claims commonly report services such as:
- Office and outpatient visits
- Physician services performed in hospitals
- Professional interpretations of diagnostic tests
- Surgeries and other procedures performed by clinicians
- Telehealth services
- Therapy or diagnostic services from eligible professional suppliers
Professional claims are usually submitted electronically through the 837P transaction. When an approved paper claim is permitted, the CMS-1500 form is used.
These claims rely heavily on CPT or HCPCS procedure codes, ICD-10-CM diagnosis codes, modifiers, rendering and billing provider information, and the correct place-of-service code.
What Is Institutional Billing?
Institutional billing covers services, supplies, accommodations, and other resources furnished by a facility. It is often called facility billing or hospital billing.
Institutional claims may be submitted by organizations such as:
- Inpatient and outpatient hospitals
- Critical access hospitals
- Skilled nursing facilities
- Home health agencies
- Hospice organizations
- Rehabilitation facilities
- Other eligible institutional providers
Institutional claims are generally submitted through the electronic 837I transaction. The corresponding paper claim is the CMS-1450, also known as the UB-04.
These claims can include type-of-bill codes, revenue codes, patient status information, occurrence and condition codes, value codes, diagnosis information, and procedure data required for the specific setting.
Professional vs Institutional Billing: Key Differences
| Billing element | Professional billing | Institutional billing |
|---|---|---|
| Primary purpose | Reports professional services performed by clinicians | Reports facility services, supplies, and institutional resources |
| Electronic format | 837P | 837I |
| Paper form | CMS-1500 | CMS-1450 or UB-04 |
| Common claim elements | CPT/HCPCS codes, modifiers, place of service, rendering provider | Type of bill, revenue codes, patient status, condition and occurrence codes |
| Typical payment method | Physician fee schedule or payer-contracted professional rate | Prospective payment system, facility fee schedule, per diem, case rate, or payer contract |
| Common billing teams | Physician practice or professional billing office | Hospital or facility patient financial services department |
Can One Encounter Produce Both Claims?
Yes. One encounter can produce a professional claim and an institutional claim because the clinician and facility may be billing for different components of the same service.
For example, a patient may receive treatment in a hospital outpatient department. The hospital can submit an institutional claim for the facility resources, while the physician can submit a professional claim for personally performed services.
Diagnostic services may also have separate professional and technical components when payer rules allow them. The technical component generally represents equipment, supplies, and technical staff. The professional component generally represents the physician’s interpretation or other professional work.
Billing teams must confirm whether a service is globally billed or divided into professional and technical components. The correct approach depends on the service, provider arrangement, payer contract, and applicable coding rules.
Professional Billing Requirements
Correct Place of Service
Professional claims use a two-digit place-of-service code to identify where the patient received the service. The place of service can affect coverage and reimbursement.
A physician office, inpatient hospital, hospital outpatient department, skilled nursing facility, and telehealth setting may require different codes. Selecting a place of service based only on habit rather than the documented location can cause denials, overpayments, or underpayments.
Rendering and Billing Provider Information
The claim must correctly identify the billing entity and, when required, the professional who rendered the service. National Provider Identifier information, enrollment records, taxonomy, reassignment arrangements, and payer credentialing should align with the submitted claim.
Procedure Codes and Modifiers
Professional billing commonly uses CPT and HCPCS codes. Modifiers may communicate circumstances such as a distinct service, professional or technical component, assistant-at-surgery role, bilateral procedure, or other payer-recognized condition.
A modifier should never be added only to bypass an edit. The medical record and applicable coding instructions must support its use.
Institutional Billing Requirements
Type of Bill
The type-of-bill code helps identify the facility type, classification, and claim frequency. An incorrect type of bill can route the claim through the wrong edits or prevent proper adjudication.
Revenue Codes
Revenue codes categorize the facility department, accommodation, or service associated with a charge. They may need to correspond with HCPCS codes or other claim information, depending on the service and payer.
Patient Status and Claim Dates
Institutional claims may require admission, statement, discharge, and patient-status information. Inconsistent dates or an incorrect discharge status can affect payment grouping, transfers, readmissions, and claim processing.
Condition, Occurrence, and Value Codes
These codes communicate specific circumstances, dates, and monetary information required for institutional claim processing. They must be selected from documented facts and applicable payer instructions.
Coding Differences That Require Attention
Both claim types may use ICD-10-CM diagnosis codes, but their procedure reporting can differ.
- Professional claims: commonly use CPT and HCPCS codes for procedures and services.
- Institutional outpatient claims: may also use CPT and HCPCS codes alongside revenue codes and other facility data.
- Institutional inpatient claims: may require ICD-10-PCS procedure codes when applicable.
Code selection should reflect the documentation, care setting, patient status, official coding guidelines, and payer policy. Moving a code from one claim format to another without reviewing these differences can create compliance and reimbursement problems.
Common Professional Billing Denials
- Incorrect place-of-service code
- Rendering provider not enrolled or credentialed
- Missing, invalid, or unsupported modifier
- Procedure and diagnosis mismatch
- Duplicate claim or service
- Failure to satisfy prior-authorization requirements
- Incorrect patient or insurance information
- Untimely filing
Professional billing teams should verify eligibility, authorization, provider participation, documentation, coding edits, and claim acknowledgements before treating a submission as complete.
Common Institutional Billing Denials
- Invalid or inconsistent type of bill
- Revenue code and procedure code conflict
- Incorrect admission, discharge, or patient-status information
- Missing condition, occurrence, or value code
- Authorization does not match the level or dates of care
- Medical-necessity or coverage requirements were not satisfied
- Duplicate or overlapping claim dates
- Failure to follow payer-specific claim sequencing rules
Institutional billing requires coordination among registration, utilization management, health information management, coding, charge capture, and patient financial services. An error earlier in the workflow can appear later as a billing denial.
How NCCI Edits Affect Both Claim Types
The Centers for Medicare & Medicaid Services maintains National Correct Coding Initiative edits to promote correct coding and reduce improper payments. CMS publishes separate procedure-to-procedure edit tables for practitioner services and outpatient hospital services.
This distinction matters because the edit logic and modifier rules applied to a professional claim may not always be identical to those applied to an outpatient institutional claim. Billing teams should use the correct, current edit files and confirm how each payer implements them.
Why Provider Enrollment and Credentialing Matter
Correct coding does not guarantee payment when enrollment or credentialing is incomplete. A clinician may be properly licensed and still encounter denials if the payer’s records do not match the claim.
Review the following before submitting claims:
- Individual and organizational NPI information
- Taxonomy and specialty records
- Practice locations
- Reassignment or employment relationships
- Payer participation effective dates
- Hospital or facility affiliations
- Electronic claims and remittance enrollment
When a provider works in multiple locations or settings, the billing workflow should confirm which entity is billing, which provider rendered the service, and which claim format applies.
How to Improve Professional and Institutional Billing
1. Separate the Workflows
Build claim-editing rules specifically for professional and institutional submissions. A single generic checklist may miss format-specific requirements.
2. Verify Information Before the Service
Confirm patient demographics, eligibility, benefits, authorization, network status, and provider participation before care whenever possible.
3. Strengthen Documentation
Documentation should support the diagnosis, procedure, level of service, medical necessity, provider participation, and care setting reported on the claim.
4. Monitor Rejections and Denials Separately
A rejected claim usually fails an initial data or formatting check and may not enter adjudication. A denied claim has generally been processed but not paid as submitted. Track these outcomes separately so the appropriate team can correct the underlying cause.
5. Review Payer Updates
Claim edits, fee schedules, authorization policies, coding instructions, and contract terms can change. Establish a regular process for reviewing Medicare, Medicaid, and commercial payer updates.
6. Analyze Denials by Root Cause
Group denials by payer, location, provider, claim type, procedure, reason code, and responsible department. Focus corrective training on repeatable workflow failures instead of repeatedly correcting individual claims.
When Outsourced Billing Support Can Help
Practices and facilities may benefit from outside support when they experience growing backlogs, recurring denials, staff shortages, credentialing delays, inconsistent follow-up, or poor visibility into accounts receivable.
An experienced billing partner can help establish separate workflows for professional and institutional claims, review claim edits, follow payer-specific requirements, monitor denials, and provide reporting that identifies revenue-cycle problems.
Learn more about our medical billing and coding services or review strategies for improving accounts receivable.
Frequently Asked Questions
Is professional billing the same as physician billing?
The terms are often used interchangeably. Professional billing generally reports services performed by physicians and other eligible healthcare professionals using the 837P or CMS-1500 claim format.
Is institutional billing the same as hospital billing?
Hospital billing is a major form of institutional billing, but other eligible facilities may also submit institutional claims. These claims generally use the 837I or CMS-1450 format.
Can a hospital submit both professional and institutional claims?
Depending on its structure, enrollment, provider arrangements, and payer rules, a hospital organization or related entity may be involved in both claim types. The professional and facility services must be reported through the appropriate billing entities and formats.
What is the difference between CMS-1500 and UB-04?
The CMS-1500 is the standard paper form for professional claims. The UB-04, formally called the CMS-1450, is the standard paper form for institutional claims.
Which claim is paid more?
Neither claim type is universally paid more. Payment depends on the covered service, care setting, payer methodology, provider contract, patient status, coding, and other policy requirements.
