MFT-CD 13 has to be calendar year with Reference Number 628.
Reminder:
Internal Revenue Manual Part 3. Submission Processing · 2026-10-03 edition · updated 2026-10-04 · United States
Follow the table/procedures in IRM 3.12.21.4.2.19(3) to identify the originator (to whom the Form 4227 (and document) should be sent for research and correction).
MFT-AND-REFERENCE-NUM-TABLE
REFERENCE-NUM
MFT-CD
DOC-CD
198
12
51, 52
253
30
51
255 through 258
30
51
260
30
51
262
30
51
271
01, 09, 11, 14
51,52
276
01, 09, 11, 14
51,52
280
01, 09, 11, 14
51,52
281 through 282
12
51
290
01, 11, 14
51, 52
292 through 295
46
51
296
01, 09, 11, 14
51, 52
299
01, 09, 11, 14
51, 52
324
40
51, 52
330 through 333
08
51, 52
330 through 333
02, 12
51
331 through 332
30
51
334
30
51
336
30
51
338
30
51
346
40
51, 52
350
40
51, 52
352 through 357
40
51, 52
359 through 363
40
51, 52
369
40
- 52
375 through 377
40
51, 52
391
13, 55
51, 52
411
13, 55
51, 52
438
03
51, 52
500 through 510
13, 55
51
511
13, 55
51, 52
512 through 518
13, 55
51
519
13
51, 52
520 through 526
13, 55
51
527 through 528
55
51, 52
530
13, 55
51, 52
531
13, 55
51, 52
533
13, 55
51, 52
535
13, 55
51, 52
537
13, 55
51, 52
547 through 548
13, 55
51
549, 550
13, 55
51, 52
551
13, 55
51, 52
559 through 562
13, 55
51, 52
581
13, 55
51, 52
589
13, 55
51, 52
598
13, 55
51, 52
599
13, 55
51, 52
600 through 657
13, 55
51
627
55
52
658
13
51, 52
658 through 660
55
51
661
13, 55
51
662 through 663
13
51, 52
662 through 673
55
51
674 through 677
13, 55
51
678 ***
13
51
680
01 through 05, 06, 07, 09 through 12, 14, 16, 30, 31, 33, 34, 37, 44, 50, 51, 52, 60, 63, 64, 77, 78
51, 52
681
02, 05, 06, 30, 31, 51, 52
51, 52
682
02, 05, 06, 34, 51, 52
51, 52
683
02, 03, 05, 06, 07, 30, 31, 34, 51, 52, 55
51, 52
685
02, 30, 31
51, 52
686 *
01 through 05, 06, 07, 09 through 12, 14, 16, 30, 31, 33, 34, 37, 44, 50, 51, 52, 60, 63, 64, 77, 78
51, 52
687
01 through 05, 07, 09 through 12, 14, 15, 16, 30, 31, 33, 34, 37, 44, 50 through 52, 60, 63, 64, 77, 78
51, 52
689 **
37, 44, 46, 67, 85, 86
51
692 ****
35, 65
51, 52
693
13
51, 52
694
13
51, 52
700
13, 30, 31, 55
51, 52
701
13
51, 52
702
13, 55
51, 52
703
13, 55
51, 52
704
13, 55
51, 52
705
13
51, 52
706
13, 55
51
707
05, 30, 31
51, 52
708, 709
13, 55
51
710
13, 30, 31, 55
51, 52
711
13, 55
51, 52
714
13, 55
51, 52
715
13, 55
51, 52
716
13, 55
51, 52
717
13, 55
51, 52
718
13, 55
51, 52
722
02, 06, 07
51, 52
723
02, 06
51, 52
724
02, 05, 06
51, 52
780, 781
ALL
51, 52
786 through 792
02, 30, 31
51
786 through 790, 792
06
51, 52
793
30, 31
51, 52
794
05, 52
51, 52
870, 871, 872
37
51, 52
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