Guide

276/277 status checks: chasing claims electronically

Summary

A 276 is the electronic inquiry your practice management system or clearinghouse sends a payer asking where a claim stands; the payer answers with a 277 reporting it as received, pending, finalized and paid, finalized and denied, or not found. CAQH CORE operating rules require payers to support this transaction, so most status checks run through your clearinghouse's own portal instead of a phone queue.

By Gale Editorial · Updated 2026-07-26. Every figure cited to a dated source. How we write.

How do I check claim status without sitting on hold?

Use the 276/277 electronic transaction instead of the phone. Your practice management system or clearinghouse sends a 276 status inquiry carrying the claim's control number and key identifiers, and the payer answers with a 277 response naming the claim's current state — received, pending, finalized and paid, finalized and denied, or not found at all 1Ref 1CAQH (2026).CAQH CORE Operating Rules.That CAQH CORE operating rules require payers to support the 276/277 claim-status transaction, along with 270/271 eligibility and ERA/EFT, in a standard defined format, making claim status a rule-governed electronic lookup rather than a payer-specific courtesy.. Most clearinghouses batch this across every payer you bill into one screen, so checking twenty claims takes about the same few minutes as checking one.

The transaction runs in the background of your normal workflow: many practice management systems trigger an automatic status pull on a schedule, and the manual version is just re-running the same inquiry on demand. Either way, the answer comes back as data pulled straight from the payer's own system, not a hold-music estimate from a phone rep reading that same system back to you.

Why this works the same way for almost every payer

It works consistently because CAQH CORE operating rules require payers to support real-time electronic transactions for eligibility, claim status, and remittance in one standard format, not a payer-specific process you relearn each time 1Ref 1CAQH (2026).CAQH CORE Operating Rules.That CAQH CORE operating rules require payers to support the 276/277 claim-status transaction, along with 270/271 eligibility and ERA/EFT, in a standard defined format, making claim status a rule-governed electronic lookup rather than a payer-specific courtesy.. That is what makes 276/277 a defined, rule-governed lookup rather than a courtesy some payers offer and others don't.

The same infrastructure carries the 837p claim out and the remittance back, so a practice already submitting claims electronically is usually already wired for status checks — it's a checkbox in the clearinghouse portal, not a new integration to build. Where a payer still only accepts paper claims in 2026, expect the status check to fall back to a phone line or a payer-specific web portal instead of the standard transaction.

Reading the 277: four things it can tell you

A 277 response sorts into a small number of buckets, and each one points to a different next action. Received or pending means the claim is in the payer's system and adjudication hasn't finished — no action needed yet beyond noting the date you checked. Finalized and paid or finalized and denied means adjudication is done, and the real detail lives on the remittance itself, not on the status response.

For a finalized-and-denied claim, the 277 tells you a decision was made, but the reason lives on the remittance as a Claim Adjustment Reason Code, the standard list payers use to explain why a line paid differently than billed or didn't pay at all 2Ref 2X12 (2026).Claim Adjustment Reason Codes.That Claim Adjustment Reason Codes are the standard list explaining why a finalized claim or line paid differently than billed or not at all, which is where the actual detail behind a 277's finalized-and-denied status lives.. A rejected status, distinct from a denial, means the claim never entered adjudication at all — a front-end format or eligibility problem bounced it before a payer ever reviewed it, and that one gets corrected and resent, not appealed.

When the 277 says 'no claim on file'

A not-found response usually means the claim never arrived, not that it's quietly processing — check first that it actually transmitted through your edi transactions log before assuming the payer lost it. If it genuinely never reached the payer, resend it as a new claim rather than waiting on a paper follow-up or a callback.

For Medicare claims, treat a missing-claim status as time-sensitive. The Medicare Claims Processing Manual sets a 12-month filing limit from the date of service, and a claim showing no record close to that window needs to go out again immediately rather than sit while you investigate what happened 3Ref 3Centers for Medicare & Medicaid Services (2026).Internet-Only Manuals (IOMs).That the Medicare Claims Processing Manual, part of CMS's public Internet-Only Manuals, sets a 12-month timely-filing limit from the date of service, making a Medicare claim status showing not found close to that window a same-day resubmission rather than a wait-and-see item.. Commercial payer contracts set their own filing windows, often shorter, which is one more reason not to let a not-found status wait for a convenient moment.

The remark code layer: detail beyond the base reason

Once a claim finalizes, the reason code on the remittance rarely tells the whole story on its own — a remark code rides alongside it to supply the specific detail the reason code is too broad to give 4Ref 4X12 (2026).Remittance Advice Remark Codes.That Remittance Advice Remark Codes supply the specific detail beyond a Claim Adjustment Reason Code on a finalized claim's remittance, which is the layer that turns a generic missing-information result into an exact, fixable field.. A generic missing-information reason paired with a remark code naming the exact field is the difference between guessing at a fix and making it correctly on the first try.

This pairing also matters when a claim finalizes but the payment looks wrong rather than denied outright. A status that comes back finalized with an unexplained reduction is worth checking against secondary claims and cob before assuming the payer simply made an error, since the payer may have processed the claim as if another plan were primary.

Building a status-check routine for a practice of one

The routine that scales for a solo is a fixed weekly pass rather than checking every claim every day. Pull anything older than roughly two weeks with no remittance yet, run the batch through the clearinghouse's status tool, and sort what comes back into three piles: still pending — leave it; finalized — post it; and not found or rejected — fix and resend today.

When a claim needs correcting and resending, send it as a replacement rather than a fresh submission. Frequency codes 7 and 8 exist specifically so a corrected or voided claim doesn't read to the payer as a duplicate of the original, and skipping that step is how a solo practice ends up chasing a duplicate-claim denial stacked on top of the original problem.

What a status check can't do for you

A 277 tells you where a claim stands; it does not adjudicate anything and it won't move a pending claim faster on its own. If the hold-up is that the payer is waiting on supporting documentation, no amount of re-checking status changes that — the claim moves only once the requested attachments actually reach the payer.

Status checking also isn't an appeal tool. A finalized-and-denied result is the payer's decision, and disputing it runs through a separate appeals process, not through re-querying the same transaction that already gave you the answer. Treat the 276/277 as the fast way to find out which claims need a human decision, not as the tool that makes the decision for you.

Common questions

The 276 is the electronic inquiry a practice or clearinghouse sends a payer asking about a specific claim, and the 277 is the payer's standardized response reporting the claim's status — received, pending, finalized and paid, finalized and denied, or not found. CAQH CORE operating rules require payers to support this format, which is what makes it usable across payers without learning each one's own system.

Usually not beyond what you already have. Most practice management systems and clearinghouses build the 276/277 transaction into their standard claims workflow, often as a status tab or an automatic overnight pull. If your current system doesn't offer it, that's a question worth asking your clearinghouse directly, since the underlying transaction is a standard one, not a premium feature.

A rejected claim never entered adjudication — a format or eligibility problem bounced it at the front end, so there's no reason code to appeal and no timely-filing credit earned. A denied claim was adjudicated and paid at zero, with a specific reason code on the remittance. Rejected claims get corrected and resent; denied claims get worked through the appeals process.

Yes — Medicare claims run through the same 276/277 transaction, typically through your clearinghouse or a Medicare-specific portal. The one thing to watch is the calendar: the program's claims processing manual sets a 12-month filing limit, so a Medicare claim showing not found close to that window needs immediate resubmission rather than a wait-and-see approach.

First confirm it actually transmitted — check your clearinghouse's submission log or acceptance report before assuming the payer lost it. If it genuinely never arrived, resend it as a new claim rather than waiting on a phone call, since a not-found status doesn't earn you any extra time against the payer's own filing deadline.

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References

1.CAQH (2026). CAQH CORE Operating Rules. CAQH CORE. link ✓That CAQH CORE operating rules require payers to support the 276/277 claim-status transaction, along with 270/271 eligibility and ERA/EFT, in a standard defined format, making claim status a rule-governed electronic lookup rather than a payer-specific courtesy.
2.X12 (2026). Claim Adjustment Reason Codes. X12. link ✓That Claim Adjustment Reason Codes are the standard list explaining why a finalized claim or line paid differently than billed or not at all, which is where the actual detail behind a 277's finalized-and-denied status lives.
3.Centers for Medicare & Medicaid Services (2026). Internet-Only Manuals (IOMs). Centers for Medicare & Medicaid Services (CMS). link ✓That the Medicare Claims Processing Manual, part of CMS's public Internet-Only Manuals, sets a 12-month timely-filing limit from the date of service, making a Medicare claim status showing not found close to that window a same-day resubmission rather than a wait-and-see item.
4.X12 (2026). Remittance Advice Remark Codes. X12. link ✓That Remittance Advice Remark Codes supply the specific detail beyond a Claim Adjustment Reason Code on a finalized claim's remittance, which is the layer that turns a generic missing-information result into an exact, fixable field.

https://www.gale.care/for-providers/cm-276-277-claim-status · 4 sources. Competitor details are cited to dated public sources and maintained as they change; figures are estimates, not commitments. Synthetic demonstration.

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