OA-133
Denials/Follow-Up

Payer Processing — Claim Pending Further Review

The payer has not made a final decision yet — the claim/line is under active review (e.g., medical review, COB investigation, fraud/utilization review) and a corrected determination is expected later.

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D21
PrimaryOA-133

In plain language

The payer has not made a final decision yet — the claim/line is under active review (e.g., medical review, COB investigation, fraud/utilization review) and a corrected determination is expected later.

Start here

Check claim status in the payer portal for the specific review reason and expected timeframe.

Who resolves it

Denials/Follow-Up

Who prevents it

Payer relations/Contracting — track and escalate payers with chronic processing delays; Information Systems — ensure claim- status monitoring tools flag aging pending claims.

RelatedCARC 193B19CARC 129
Common RARCsN469
Resolution path
Work these steps in order for D21 / OA-133

How to resolve this denial, step by step

  1. 1

    Check claim status in the payer portal for the specific review reason and expected timeframe.

  2. 2

    If additional information was requested, provide it promptly and document submission.

  3. 3

    Set a follow-up date consistent with the payer's stated review timeframe; do not resubmit the claim as new during this period.

  4. 4

    If the review timeframe has passed without resolution, contact the payer for status and consider escalation.

  5. 5

    Document all payer communications and dates.

  6. 6

    Escalate to Payer/Contracting relations if delays are excessive or recurring for this payer.

Then choose the correct disposition

Payer follow-up

the standard action while a claim is pending review.

Documentation submission

if requested by the payer as part of the review.

Formal appeal

only appropriate once a final adverse determination is actually issued; there is nothing to appeal while the claim remains pending.

Stop and escalate when

  • Review timeframe significantly exceeded with no payer response; pattern of a specific payer routinely leaving claims in pending status (possible systemic payer processing error).

What Needs to Be Corrected

  • Claim correction: None — there is no claim data error; this is a payer-side processing status.
  • Upstream correction: If the practice is asked for additional information to support the review, that information should be submitted promptly (see D20 workflow).

Do Not Do This

  • Do not resubmit the claim as a new or duplicate submission while it is legitimately pending review — this creates duplicate-claim denials (cross-reference D10) and delays resolution further.
  • Do not assume a pending status is a denial and write it off prematurely.