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Claim adjustment reason code

PR-1: Deductible amount

PR-1 means: Deductible Amount The payer applied this amount to the patient’s deductible. It is not a denial — it is the plan working as designed, and the balance is the patient’s.

Read the group code before you act on this

1 is the claim adjustment reason code. The PR in front of it is the group code — a separate field the payer sets on the remittance. The same reason code arrives under different group codes depending on the payer and the situation, and the group code, not the reason code, decides who owes the money.

  • CO — contractual obligation. You write it off. You may not bill the patient.
  • PR — patient responsibility. Billable to the patient.
  • OA — other adjustment, and PI — payer initiated reduction. Neither is patient responsibility.

What causes it

  • The patient has not met their deductible for the plan year
  • A high-deductible plan where most early-year services fall to the patient
  • The deductible reset at the plan year boundary, which is not always 1 January
  • Services applied to a separate deductible for a specific benefit category

How to work it

  1. Do not appeal this. Confirm the amount is right against the plan’s deductible and what has already been applied
  2. Move the balance to patient responsibility and get a statement out promptly — collection rates fall sharply with age
  3. Where the patient has other coverage, this is where the secondary claim goes
  4. Where the deductible appears already met, that is worth a call; the payer’s accumulator can be behind

How to stop it recurring

The prevention here is financial, not clerical: check the remaining deductible during eligibility and tell the patient what they will owe before the visit. A balance discussed in advance is collected far more often than one that arrives as a surprise.

Who does this work

A patient billing & statements seat at $1,600 per seat per month works this queue full time, during your business hours, inside your own system. Every call is logged with the payer reference number and the outcome, and every Friday you get it in writing.

What that seat does →

Codes worked the same way

PR-1 is checked against the contract before any work is done. So are these, which is why a queue sorted by recovery route moves faster than one sorted by code number — the same person, in the same system, with the same evidence to hand, clears all of them in one pass.

  • CO-45Charge exceeds the fee schedule
  • CO-97Payment included in another service
  • CO-18Exact duplicate claim or service
  • CO-288Referral absent
  • PR-204Not covered by this plan
  • OA-23Prior payer already adjudicated

Specialties that name this among their costliest

These are specialties whose own worst denials include one of this kind. The line under each is the denial they name, quoted from their page so you can see what the link is based on.

  • Anesthesia
    Post-op pain blocks bundled into the anesthesia claim
  • Ophthalmology
    Retinal imaging and fundus photography done at the same visit, with one line denied as bundled because the record never gives a separate reason for each test.
  • Otolaryngology
    The operative note does not state which sinuses were entered on which side, so the sinus surgery lines are bundled together or only one side is allowed.
  • Urgent Care
    A global urgent care case rate billed alongside a separate evaluation and management line where the contract pays one or the other, and the second line drops off
  • Primary Care
    A preventive visit and a same-day problem visit written up in one undivided note, so the problem visit bundles into the wellness visit and is not paid separately.
  • Oncology
    Payer required the drug through its contracted specialty pharmacy, the practice infused from its own stock, and the buy-and-bill claim was denied in full.

What leaving it costs

Working a denied claim costs $57.23 per denied claim in administrative time. Source. At 100 denials a month — an illustration, not a measurement of your practice — that is $5,723 a month, or $68,676 a year, in labour alone.

The figure that makes it worth spending: about 90% of initially denied claims are eventually paid. Source. The reason a denial sits is almost never that nobody knows how to work it — it is that nobody has the hours.

Questions

What does denial code PR-1 mean?

Deductible Amount In plain terms: The payer applied this amount to the patient’s deductible. It is not a denial — it is the plan working as designed, and the balance is the patient’s.

What causes PR-1?

The patient has not met their deductible for the plan year. A high-deductible plan where most early-year services fall to the patient. The deductible reset at the plan year boundary, which is not always 1 January. Services applied to a separate deductible for a specific benefit category.

How do you fix a PR-1 denial?

Do not appeal this. Confirm the amount is right against the plan’s deductible and what has already been applied. Move the balance to patient responsibility and get a statement out promptly — collection rates fall sharply with age. Where the patient has other coverage, this is where the secondary claim goes. Where the deductible appears already met, that is worth a call; the payer’s accumulator can be behind.

Can PR-1 be prevented?

The prevention here is financial, not clerical: check the remaining deductible during eligibility and tell the patient what they will owe before the visit. A balance discussed in advance is collected far more often than one that arrives as a surprise.

Is PR-1 the same as CO-1?

Same reason, different group code. The number 1 is the reason: The payer applied this amount to the patient’s deductible. It is not a denial — it is the plan working as designed, and the balance is the patient’s. The prefix says who carries the amount. PR means patient responsibility — the payer says the amount is owed by the patient, and it is billed to them. CO-1 is the same reason assigned to contractual obligation — the payer says the amount is not billable to anybody, and it is written off unless the denial itself is overturned. Read the prefix before the number: it decides whether you appeal, write off, or bill the patient.

What about the codes next to PR-1?

PR-0 and PR-2 are separate codes and this site does not yet cover them. The authoritative list is the X12 Claim Adjustment Reason Codes at x12.org/codes/claim-adjustment-reason-codes; a code is only described here once its official text, causes and fix have been written and checked.

Code descriptions are the standard X12 claim adjustment reason and remittance advice remark code text. Payer policies differ, and the payer’s own coverage policy governs any individual claim. This page is working guidance, not legal or clinical advice.

Last updated 2026-09-12. This is operational guidance drawn from payer remittance practice, not legal, coding or reimbursement advice. Payer-specific rules vary and change; confirm against the payer’s own policy before acting on a specific claim.

Other denial codes

Next step

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