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MA132 Remark Code: Adjustment to Pre-Demonstration Rate

MA132 means the payment was adjusted to the pre-demonstration rate, the rate that applied before a demonstration project changed how the service is paid.

Quick facts

Code
MA132 (RARC MA132)
Status
Active In use since October 12, 2001.
Code set
Remittance Advice Remark Codes (RARC)
Group codes
  • CO (Contractual Obligation): The difference is a provider adjustment reflecting the rate applied, and is not billed to the patient.
Official description
Adjustment to the pre-demonstration rate.
X12 Remittance Advice Remark Codes, retrieved September 25, 2026
Last verified
against the official X12 list.

What MA132 means

MA132 is a Medicare pricing remark tied to demonstration projects. It tells you the payer adjusted the claim to the pre-demonstration rate, meaning payment reflects the rate in effect before the demonstration’s payment method applied. The remark explains the amount; it does not say why the older rate was chosen.

Common causes

  • The date of service fell outside the demonstration’s effective period.
  • The claim did not include coding or identifiers that place it in the demonstration.
  • The provider’s or patient’s participation did not qualify for the demonstration rate.

What to do

  1. Compare the payment with both the pre-demonstration and demonstration rates.
  2. Check dates and participation to determine which rate should apply.
  3. Correct the claim if demonstration identifiers were missing, then resubmit as directed.
  4. Contact the payer if you believe the demonstration rate should have applied.

How to prevent it

  • Track demonstration effective dates and participation requirements.
  • Include required identifiers on demonstration claims, such as contract numbers.
  • Watch for rate patterns in remittances; an ERA Analyzer review helps spot claims paid at an unexpected rate.

Codes that may appear with MA132

  • CO-45 (Charge exceeds fee schedule/maximum allowable or contracted/legislated fee arrangement.): A fee schedule or rate adjustment, with MA132 explaining which rate was used.
  • MA131 (Physician already paid for services in conjunction with this demonstration claim.): A demonstration claim held because a physician was already paid separately.
  • MA80 (Informational notice.): An informational notice about hospital payment for the encounter under a demonstration.

MA132 FAQ

What is a pre-demonstration rate?

It is the payment rate that applied before a demonstration project changed payment for the service. MA132 tells you the payer used that rate.

Why would the payer use the old rate?

The official text does not say. Common reasons may relate to dates of service, eligibility for the demonstration, or how the claim was coded. Ask the payer.

What if I expected the demonstration rate?

Verify that the service, dates, and your participation qualify for the demonstration rate, then contact the payer to request reprocessing.