CO-32: patient is not an eligible dependent.

What X12 says CARC 32 means

Our records indicate the patient is not an eligible dependent.

CARC 32 · Start 01/01/1995, last modified 03/01/2018.

In plain terms: The payer's records do not show the patient as an eligible dependent on the policy.

What it means on a remittance

The wording is "our records indicate", so the denial rests on the payer's enrollment file. If the file is wrong or out of date, the claim data may be fine and the fix sits with the subscriber or plan sponsor.

Typical causes

• The patient was never added to the policy as a dependent, or was removed.
• The dependent has aged out of, or otherwise stopped meeting, the plan's dependent rules.
• The claim lists the patient under the wrong subscriber ID or with the wrong relationship code.
• Coverage for the dependent ended before the date of service.

These are common billing patterns, not a diagnosis of your claim. The remittance and the payer's policy decide.

What to check

1. Run an eligibility check for the date of service using the dependent's own information.
2. Compare subscriber ID, patient name, birth date and relationship on the claim with the insurance card.
3. Ask the patient to confirm enrolment with the plan or employer.
4. Check the remark code on the line; N30 and N382 speak to related issues.

Correct, resubmit or appeal

If the claim data was wrong, submit a corrected claim. If the payer file is wrong, the patient or plan sponsor has to correct enrollment, after which you ask the payer to reprocess. If coverage truly does not extend to the patient, bill the correct payer or the patient according to your contract and policies.

Medicare dates that apply

A Medicare redetermination request must be filed within 120 calendar days from the date a party receives the notice of the initial determination; receipt is presumed 5 calendar days after the notice date unless there is evidence to the contrary (42 CFR 405.942(a)), and a late request can be considered for good cause (405.942(b)). Other payers set their own appeal windows in the contract or plan documents, so read the notice for the date. The tool above runs the date math.

Related codes

X12 does not publish a table that pairs each code with remark codes; the payer picks the remark code and prints it beside the CARC on the same remittance line. These X12 remark codes carry wording that speaks to this topic:

• N30 — Patient ineligible for this service.
• N382 — Missing/incomplete/invalid patient identifier.

Other codes: CARC 33 (insured has no dependent coverage) and RARC N30.

Worked example (hypothetical)

A child's claim returns CO-32. The card lists the child, but the claim carried the parent's ID suffix with the wrong relationship code. The biller corrects the relationship code, confirms eligibility and submits a corrected claim.

Sources

• X12: Claim Adjustment Reason Codes — code text, usage notes and dates (list dated 10/30/2026, retrieved 2026-11-02)
• X12: Remittance Advice Remark Codes — remark code text (retrieved 2026-11-02)
• 42 CFR 405.942 — eCFR, current through 2026-10-29 (retrieved 2026-11-02)

Code descriptions are X12 copyrighted material, quoted here only for the codes on this page and linked to the owner. For the full lists, use X12. The X12 text and the Medicare rule above were read from these pages on November 2, 2026. Causes, checks and examples are general billing practice written for this page, not X12 content. Payers revise code lists, contracts and policies, so confirm anything that affects a claim or a deadline with the payer.