EDI 277 – Health Care Claim Status Response (ANSI ASC X12)?

What Is the EDI 277? 

The EDI 277 Health Care Claim Status Response is an ANSI ASC X12 transaction set used by payers, insurers, and government agencies to communicate the processing status of a previously submitted healthcare claim. It provides structured electronic feedback regarding whether a claim has been received, is pending, denied, finalized, or requires corrective action. The EDI 277 is transmitted in direct response to an EDI 276 Health Care Claim Status Request and supports both healthcare and workers’ compensation environments. 
 

What Does the EDI 277 Do? 

The EDI 277 delivers claim-level and service-line-level adjudication status in response to an EDI 276 inquiry. It replaces manual status calls and email follow-ups with a standardized electronic communication that integrates directly into revenue cycle and claim management systems. 
 

Who Uses the EDI 277? 

The EDI 277 is a terminal informational response to the EDI 276 inquiry, is used by payers, insurers, and government agencies and within defined regulatory and payer ecosystems. A transaction pair that aligns the EDI 276 & 277 they are part of the HIPAA-adopted electronic transaction standards, with an important distinction. 

While HIPAA does not require providers to submit claim status inquiries (276) electronically nor does HIPAA require an ‘in kind’ electronic response (277). HIPAA does require when claim status inquiry is conducted electronically, the standardized X12 276 format MUST be used, a distinction critical in establishing an understanding of voluntary standards.  Here is a breakdown… 

• HIPAA does not require providers to submit claim status inquiries electronically, nor does HIPAA require an electronic response
• HIPAA ONLY requires that when a claim status inquiry is electronically submitted, the submission MUST leverage the X12 276.
• This ensure voluntary standard alignment among regulatory and payer ecosystem participants

The EDI 277 Health Care Claim Status Response is used by payers, insurers, and government agencies, more specifically 

• Government healthcare programs
• Workers’ compensation boards
• Commercial insurance payers
• Healthcare providers
• Clearinghouses and billing services 
   

When Is the EDI 277 Required? 

The EDI 277 is issued when a payer responds to an EDI 276 Health Care Claim Status Request. In regulated healthcare environments, it is required to support HIPAA-mandated electronic claim status workflows. 
 

Is the EDI 277 Mandated Under Regulation? 

The EDI 276/277 transaction pair for electronic claim status inquiry and response while not mandated under HIPAA, operates within HIPAA covered entities, defined, regulatory, and payer ecosystems.  
 

How Does the EDI 277 Work in the Business Workflow? 

Positioning the EDI 276 at the center of lifecycle, upstream transactions become those transactions that occur before the EDI 276 is issued and downstream transactions occur after the EDI 276 is sent. 
 

Upstream Transactions 

Downstream Transactions 

End-to-End Workflow Example 

1. Provider submits 837 claim. 
   The provider transmits an X12 837 Health Care Claim to request reimbursement, sending patient, diagnosis, procedure, and charge data to the payer for adjudication.
2. Provider or clearinghouse sends 276 status inquiry. 
   If processing appears delayed or unclear, a X12 276 Health Care Claim Status Request is sent to ask the payer for the current status of the submitted claim.
3. Payer responds with 277 status response. 
   The payer returns an X12 277 Health Care Claim Status Response that reports where the claim stands in the adjudication process and whether action is required.
4. Provider reviews STC codes. 
   The provider examines the STC status codes within the 277 to determine if the claim is accepted, rejected, pending, or needs correction.
5. Claim is corrected or proceeds to payment via 835. 
   If corrections are needed, the claim is resubmitted; if approved, payment and remittance details are issued through the X12 835 Health Care Claim Payment/Advice to complete the reimbursement cycle. 

Where Is the EDI 277 Used? 

• Healthcare provider networks
• Payer adjudication systems
• Managed care organizations
• Government programs
• Workers’ compensation programs 
   

Are There Industry-Specific Responses to the EDI 277? 

Yes. Companion guides and jurisdiction-specific implementations such as those available through the Ohio Bureau of Workers' Compensation (BWC) define code usage, timing expectations, and additional reporting requirements depending on payer type or regulatory authority. 
 

Typical Workflow 

Industry-Specific Workflow Variations 

While the EDI 277 Health Care Claim Status Response is standardized under ANSI ASC X12 and governed by HIPAA rules, and the data structure of the 277 remains standardized across all segments, its workflow behavior varies significantly by healthcare segment, payer model, and processing environment.  How EDI 277 Health Care Claim Status Response is used differs operationally by industry.  

• Timing varies
• Automation depth varies
• Service-level reporting varies
• Authorization dependency varies
• Companion guide requirements vary 

Below are the most common industry-specific workflow variations 

Commercial / Medicare Example Flow 

Private payers often automate aging triggers for 276 inquiries, and some issue unsolicited 277 responses. STC codes feed denial management systems and revenue cycle dashboards in near real time. 

270 → 271 → 837 → 999 → 276 → 277 → 835 
 

Clearinghouse-Centric Environments 

Clearinghouses may normalize, aggregate, or even proactively generate status reporting. Providers may receive standardized 277 responses even when payer implementations differ internally. 

270 → 271 → 837 → 999 → 276 → 277 → 835 
 

Government Programs (Medicare / Medicaid) 

276 → 277CA → 277 (detailed status may follow) 
 

Medicare 

Medicare emphasizes strict validation and regulatory turnaround timelines. The 277 often follows structured acknowledgment (277CA), and compliance accuracy is tightly monitored under CMS rules  

270 → 271 → 837 → 999 → 277CA → 276 → 277 → 835 
 

Medicaid (State-Based Programs) 

State Medicaid agencies publish companion guides that may alter timing, required loops, or code interpretations. Some states issue proactive 277 updates, while others rely strictly on inquiry-driven workflows. 

270 → 271 → 837 → 999 → 276 → 277 → 835 
 

Workers’ Compensation Example Flow 

Workers’ compensation workflows often include injury reporting (148) and longer investigation periods. The 277 may reflect authorization or investigative status rather than standard adjudication timing. 

148 → 837 → 276 → 277 → 275 (if required) → 835 
 

Hospital & Institutional Billing 

Institutional claims often involve high-dollar and multi-service complexity. The 277 may include detailed service-level STC, AMT, and QTY reporting, supporting financial forecasting and partial approval tracking 

270 → 271 → 837I → 999 → 276 → 277 (claim + service-level) → 835 
 

Dental 

Dental claims generally adjudicate quickly. The 277 is used primarily for rapid rejection resolution or confirmation rather than extended pending cycles, with less hierarchical complexity than medical claims. 

270 → 271 → 837D → 999 → 276 → 277 → 835 
 

Behavioral Health 

Behavioral health frequently depends on prior authorization and unit limits. The 277 often communicates pending review and quantity approvals, closely tied to authorization workflows. 

270 → 271 → 278 (authorization) → 837 → 276 → 277 → 835 
 

How does PartnerLinQ use the EDI 277? 

PartnerLinQ enables automated, system-to-system claim status communication between payers and providers. The platform standardizes interpretation of STC codes, integrates responses into billing systems, and reduces administrative follow-up through governed automation and exception workflows. 
 

What Is the Purpose, Key Features, and Business Use Cases of the EDI 277? 

The EDI 277 – Health Care Claim Status Notification transaction set enables trading partners to communicate the status of previously submitted health care claims. It is most commonly used in healthcare payer–provider ecosystems to report acceptance, rejection, pending review, or adjudication outcomes at the claim or service-line level. 

Key features include hierarchical reporting of claim and service status, standardized status and reason code structures, traceability to the originating inquiry, and alignment with HIPAA-mandated claim status workflows. The transaction supports both professional and institutional claim environments and accommodates jurisdiction-specific implementations. 

Although most often associated with revenue cycle management, the 277 does play a broader role in operational visibility, compliance alignment, and exception control across healthcare networks. 

Operational Purpose 

Provides standardized claim status visibility after submission. 

Key Features 

• Hierarchical claim and service reporting
• Standardized STC status codes
• Inquiry-response traceability via TRN
• HIPAA-aligned structure 
   

Business Use Cases 

The EDI 277 supports a range of post-submission claim management and visibility use cases by providing a standardized method for responding to claim status requests with timely information after a claim has been filed. These use cases are especially critical in high-volume healthcare and Workers’ Compensation environments where timely insight into claim processing directly impacts patients, services, cash, and operational efficiency. 

Primary Industry: Healthcare 

The EDI 277 is most commonly used in: 

• Health insurance payers
• Government healthcare programs
• Revenue cycle management (RCM) providers
• Clearinghouses
• Hospitals
• Physician practices 
   

Operational Visibility 

The 277 provides structured insight into where a claim sits in the adjudication lifecycle by transforming claim status inquiries from manual inquiry (e.g., email, telephone calls) into a structured automated transaction that improves visibility.   

• Reduces call-center dependency
• Enables real-time dashboards
• Improves days in accounts receivable (AR) 

Compliance Reporting 

Under HIPAA Administrative Simplification, electronic healthcare claim status transactions must follow X12 standards aligning EDI 276/277 as a transaction pair and part of the HIPAA-adopted electronic transaction standards, which is not the same as mandated.  In other words manual healthcare claim status inquiries may be manual. 
 

Financial Reconciliation 

Although the 277 is not considered as a payment transaction, the 277 influences financial forecasting and reconciliation working upstream of the X12 835. 
 

What is the Purpose of the EDI 277? 

The purpose of the EDI 277 is to provide a reliable, standardized, and auditable mechanism for communicating the processing state of a submitted health care claim. The transaction removes uncertainty from post-submission workflows by clearly identifying whether a claim has been accepted, is under review, has been denied, or requires correction prior to further processing.

Downstream Transactions 

Supply Chain Coordination 

While the 277 is not considered a traditional supply-chain document, the 277 coordinates information flow across providers, clearing houses, payers and billing services.  In a healthcare revenue supply chain, claims function as financial transactions moving through a processing network. 
 

Exception Management 

The EDI 277 is an excellent foundational exception-management document. 
 

Common 277 Status Categories with STC01 Composite Examples 

What Information Is Required in the EDI [Transaction ID]? 

Required Segments 

Optional Segments 

Required Identifiers 

• Payer ID
• Provider ID
• Claim Control Number
• TRN reference 
   

Required Dates 

• Processing Date
• Status Effective Date 
   

Required Financial Data (if applicable) 

• Claim monetary amounts via AMT segment 
   

Required Reference Numbers 

• Claim numbers
• Inquiry reference numbers 
   

Claim-Level vs Line-Level Detail 

The 277 supports both claim-level and service-line-level reporting using hierarchical loops and STC status indicators. 
 

Summary Table of Key Segments 

What Status and Reason Codes Are Used with the EDI 277? 

The X12 277 uses standardized status codes to communicate claim processing outcomes in a structured, machine-readable format. 
 

How Codes Work Together in the STC Segment 

The STC segment combines codes with meaning to enable automation and exception routing. 

Example:  STC*A3:29*20260220*WQ~ 

Meaning: 

• A3 → Claim rejected as un-processable
• 29 → Subscriber/patient mismatch
• Date → Status effective date
• WQ → Work queue status 
   

Code Elements 

Status Codes (Code Source 507) 

*Only used with the EDI 277 CA 

**A complete list of Claim Status Category Codes is available through X12 https://x12.org/codes/claim-status-category-codes  
 

Reason Codes 

Industry-Specific Code Sets 

Companion guides define allowable status and action codes by payer or regulatory authority. 
 

What are the Benefits of the [Transaction ID]?  

Operational Benefits 

• Eliminates manual status follow-up
• Improves claim lifecycle visibility 
   

Financial Benefits 

• Accelerates denial resolution
• Improves cash flow predictability 
   

Compliance Benefits 

• Supports HIPAA reporting requirements
• Maintains standardized audit trails 
   

What are the Benefits of Automating the EDI [Transaction ID]? 

• Automated STC interpretation
• Exception workflow routing
• Trend analysis on denial patterns
• Reduced administrative workload 
   

How to Check Claim Status Electronically Using EDI 276/277 pair?

Electronic claim status monitoring follows a structured lifecycle. The process begins with claim submission and continues through automated inquiry, response interpretation, and resolution management. Each transaction plays a distinct role within the revenue cycle. Operational walkthrough: 

• The lifecycle begins with the EDI 837 Health Care Claim transaction.
• The EDI 276 is triggered after a defined monitoring interval
• Typically, 10–14 days after claim submission or beyond expected cycle
• The payer returns the EDI 277 Claim Status Response.
• The EDI 277 provides status codes describing claim position within the adjudication workflow.
• Analyze and act upon returned status indicators
• Monitor and Interpret EDI 277 Status Codes
• STC01-1 = Claim Status Category Code
• STC01-2 = Claim Status Code 
   

Common 277 Status Categories with STC01 Composite Examples 

Are there Regulatory and Compliance Requirements for the EDI [Transaction ID]  

The EDI 277 complies with ANSI ASC X12 standards and supports HIPAA Administrative Simplification mandates governing electronic healthcare transactions.
 

EDI [Transaction ID] Technical Structure, Format, and Versions 

Hierarchical Loop Structure

The transaction uses HL segments to define information hierarchy across information source, information receiver, subscriber, dependent, claim, and service levels. 
 

File Format and Delimiters 

The EDI 277 follows standard X12 delimiter conventions and is transmitted within Functional Group HR. Typical Production Delimiters include: 

• Segment Separator - hex 15 (NAK) or hex 7E (~)
• Element separator - hex 7C (|) or hex 2A (*)
• Sub-element Separator - hex 3E (>) 
   

Version Differences 

Implementation specifics vary by payer companion guide, common versions include v3051, v4010 and v5010. 
 

What are the Limitations of the [Transaction ID]? 

Version or Companion Guide Constraints 

Companion guides may restrict code sets or segment usage.  
 

Jurisdiction-Specific Requirements 

Workers’ compensation programs may impose additional validation rules. 
 

Timing and Frequency Limitations 

Status availability depends on payer adjudication processing cycles. 
 

Are Implementation Guidelines and Sample Files Available for the EDI [Transaction ID]? 

Guidelines and sample files are available through trading partners and operators like PartnerLinQ to support onboarding and technical development.  

EDI [Transaction ID] Example File (X12 Sample) 
 

What Are the More Common EDI Errors and Rejection Scenarios for the EDI 277? 

Structural Errors (997 / 999)

• Invalid hierarchical loops
• Segment count mismatch 
   

Data Validation Errors 

• Missing claim identifiers
• Invalid payer codes 
   

Identifier Mismatch Errors 

• TRN reference mismatch
• Subscriber ID inconsistency 
   

Version Compliance Errors 

• Incorrect version indicator
• Non-compliant segment usage 
   

Industry-Specific Rejections 

• Jurisdiction-specific rule failures
• Companion guide violations 
   

What Are the Basic Questions for EDI Integration with the EDI 277? 

• What is the general direction of the EDI 277 transaction?
• Is the transaction inbound or outbound?
• Are companion guides available?
• Are there samples and specs of the response transaction available?
• Are AS2, VAN, or SFTP connections used?
• Are more than one trading partner exchanging the EDI 277?
• Are there other interested parties?
• What trading partner requirements apply?
• What version is supported?
• What version is required (v3051, v4010 v5010)?
• What other transactions might these interested parties be a party to?
• What systems generate or receive the transaction?
• What validation rules apply?
• What response to the EDI 277 is expected or sent?
• Is a response to EDI 277 a timed event?  Are notifications involved/needed?
• Is there automation?
• Are responses automatically triggered?  or do transactions require human intervention?
• How are STC codes interpreted?
• What testing process is required? 

What transactions form the lifecycle (276, 837, 835)? 

Summary Table of Associated Transactions 

What are the Best Practices for using the [Transaction ID]? 

What Transactions are associated with the EDI 276? 

The EDI 276/277 Health Care Claim Status Request/Response transactions does not function independently, rather they are paired, follow a structured lifecycle and operate within a broader healthcare EDI ecosystem interacting with claim submissions, acknowledgments, response, and remittance workflows. 

Summary Table of Associated Transactions