Code 483: correction of erroneous posting of tc 480, returned (not processable).
From IRS Document 6209, the IRS's processing codes manual.
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Document 6209 says
Used on individual (IMF) accounts.
Correction of Erroneous Posting of TC 480, Returned (Not Processable)
The full Document 6209 entry, as printed
I/B Correction of Erroneous Posting of TC 480, Returned (Not Processable) 77 Records information that TC 480 OIC was posted in error, or returned because OIC was not Processable. Does not extend Assessment and Collection Statute Expiration Dates, reverts to normal date. Generates OIC Transcript but discontinues further OIC transcripts.
After code 483
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Questions people ask
What does code 483 mean on my IRS transcript?
Document 6209 calls it "Correction of Erroneous Posting of TC 480, Returned (Not Processable)".
Sources
Checked against these sources on October 30, 2026.