https://www.irs.gov/vi/individuals/understanding-your-cp21b-notice
Understanding your CP21B notice | Internal Revenue Service
We sent you this notice because we made the changes you requested to your tax return for the tax year specified on your notice. You should receive your refund...
understandingnoticeinternalrevenueservice
https://ttlc.intuit.com/community/after-you-file/discussion/do-i-need-to-file-a-form-8888-if-i-received-notice-cp21b-it-seems-i-do-but-they-are-usually-attached/00/3063562
Do I need to file a form 8888 if I received notice CP21B? It seems I do but they are usually...
Feb 23, 2026 - Do I need to file a form 8888 if I received notice CP21B? It seems I do but they are usually attached to your return but my return was filed already so how do
do i need to file