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N752 Remark Code: HIPPS Treatment Authorization Code

N752 means the HIPPS Treatment Authorization Code (TAC) on this claim is missing, incomplete, or invalid. The TAC is generated from the patient assessment that also produces the HIPPS code, and the payer uses it to match the claim to that assessment.

Quick facts

Code
N752 (RARC N752)
Status
Active In use since March 1, 2015.
Code set
Remittance Advice Remark Codes (RARC)
Group codes
  • CO (Contractual Obligation): The facility or agency bears the denial until a valid code is submitted. The patient should not be billed.
Official description
Missing/incomplete/invalid HIPPS Treatment Authorization Code (TAC).
X12 Remittance Advice Remark Codes, retrieved September 25, 2026
Last verified
against the official X12 list.

What N752 means

HIPPS codes are used on institutional claims for certain post-acute care, such as some home health, skilled nursing, and rehabilitation settings, to describe the payment group assigned from a patient assessment. In some settings and time periods, the assessment process also produced a Treatment Authorization Code that the payer used to validate that the claim matched a real, accepted assessment.

N752 says that code is absent or does not check out. It usually appears with CARC 16. The service may be fully payable once the correct code is supplied.

Common causes

  • The TAC was left off the claim or truncated during data entry.
  • The claim was built from a different assessment than the one the TAC belongs to.
  • The assessment was corrected or resubmitted, producing a new code the claim did not pick up.
  • Characters were transposed when the code was typed manually.

How to fix it

  1. Locate the assessment that supports the claim period and the HIPPS code billed.
  2. Retrieve the TAC from the assessment software output and compare it with the claim.
  3. Confirm the HIPPS code and TAC come from the same assessment.
  4. Submit a corrected claim with the right code, following the payer’s rules for replacement claims on institutional bills.
  5. If the assessment was never accepted, resolve that with the assessment submission system before rebilling.

How to prevent it

Import HIPPS and TAC values directly from assessment output rather than typing them. Pre-billing edits that check both codes are present and paired catch most errors before submission.

Codes that may appear with N752

  • CO-16 (Claim/service lacks information or has submission/billing error(s).): The claim lacks information or has a billing error; N752 identifies the TAC.
  • CO-A1 (Claim/Service denied.): A general denial clarified by the TAC problem.
  • N471 (Missing/incomplete/invalid HIPPS Rate Code.): The HIPPS rate code itself is missing or invalid, rather than the TAC.
  • M62 (Missing/incomplete/invalid treatment authorization code.): A general treatment authorization code is missing or invalid.
  • N54 (Claim information is inconsistent with pre-certified/authorized services.): The claim information is inconsistent with what was authorized.

N752 FAQ

What is a HIPPS Treatment Authorization Code?

It is a code produced from a patient assessment in certain post-acute settings. It lets the payer match the claim to the assessment that supports the HIPPS payment code billed.

Where do I get the correct TAC?

From the assessment software or grouper output for the assessment the claim is based on. Compare it with what was placed on the claim.

Do all post-acute claims need a TAC?

No. Requirements depend on the setting, the payer, and the period of service, and they have changed over time. Check the payer's current billing instructions.