DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

K50 Crohn's disease [regional enteritis]

  • Header · not billable

K50 is not billable. The category heads 28 billable codes in FY2027, grouped under 4 subdivisions.

Index → code

  • Enteritis (acute) (diarrheal) (hemorrhagic) (noninfective)regional (of) → K50.90
  • Enteritis (acute) (diarrheal) (hemorrhagic) (noninfective)regional (of)large intestine (colon) (rectum) → K50.10
  • Enteritis (acute) (diarrheal) (hemorrhagic) (noninfective)regional (of)small intestine (duodenum) (ileum) (jejunum) → K50.00

Where it sits

  1. Chapter 11 Diseases of the digestive system (K00-K95)
  2. K50-K52 Noninfective enteritis and colitis (K50-K52)
  3. K50 Crohn's disease [regional enteritis]
Billable codes
28
Subdivisions
4
CC / MCC codes
28 / 0
HCC V28 codes
28
New FY2027
0
Index entries
35

Codes in K50

  1. K50.0
    Crohn's disease of small intestine
    Header
    Inclusion terms 5, Excludes1 1

    Inclusion terms

    • Crohn's disease [regional enteritis] of duodenum
    • Crohn's disease [regional enteritis] of ileum
    • Crohn's disease [regional enteritis] of jejunum
    • Regional ileitis
    • Terminal ileitis

    Excludes1

    • Crohn's disease of both small and large intestine (K50.8-) K50.8
  2. K50.00
    Crohn's disease of small intestine without complications
    BillableCC80
  3. K50.01
    Crohn's disease of small intestine with complications
    Header
  4. K50.011
    Crohn's disease of small intestine with rectal bleeding
    BillableCC80
  5. K50.012
    Crohn's disease of small intestine with intestinal obstruction
    BillableCC78 80
  6. K50.013
    Crohn's disease of small intestine with fistula
    BillableCC80
  7. K50.014
    Crohn's disease of small intestine with abscess
    BillableCC80
  8. K50.018
    Crohn's disease of small intestine with other complication
    BillableCC80
  9. K50.019
    Crohn's disease of small intestine with unspecified complications
    BillableCC80
  10. K50.1
    Crohn's disease of large intestine
    Header
    Inclusion terms 5, Excludes1 1

    Inclusion terms

    • Crohn's disease [regional enteritis] of colon
    • Crohn's disease [regional enteritis] of large bowel
    • Crohn's disease [regional enteritis] of rectum
    • Granulomatous colitis
    • Regional colitis

    Excludes1

    • Crohn's disease of both small and large intestine (K50.8) K50.8
  11. K50.10
    Crohn's disease of large intestine without complications
    BillableCC80
  12. K50.11
    Crohn's disease of large intestine with complications
    Header
  13. K50.111
    Crohn's disease of large intestine with rectal bleeding
    BillableCC80
  14. K50.112
    Crohn's disease of large intestine with intestinal obstruction
    BillableCC78 80
  15. K50.113
    Crohn's disease of large intestine with fistula
    BillableCC80
  16. K50.114
    Crohn's disease of large intestine with abscess
    BillableCC80
  17. K50.118
    Crohn's disease of large intestine with other complication
    BillableCC80
  18. K50.119
    Crohn's disease of large intestine with unspecified complications
    BillableCC80
  19. K50.8
    Crohn's disease of both small and large intestine
    Header
  20. K50.80
    Crohn's disease of both small and large intestine without complications
    BillableCC80
  21. K50.81
    Crohn's disease of both small and large intestine with complications
    Header
  22. K50.811
    Crohn's disease of both small and large intestine with rectal bleeding
    BillableCC80
  23. K50.812
    Crohn's disease of both small and large intestine with intestinal obstruction
    BillableCC78 80
  24. K50.813
    Crohn's disease of both small and large intestine with fistula
    BillableCC80
  25. K50.814
    Crohn's disease of both small and large intestine with abscess
    BillableCC80
  26. K50.818
    Crohn's disease of both small and large intestine with other complication
    BillableCC80
  27. K50.819
    Crohn's disease of both small and large intestine with unspecified complications
    BillableCC80
  28. K50.9
    Crohn's disease, unspecified
    Header
  29. K50.90
    Crohn's disease, unspecified, without complications
    BillableCC80
    Inclusion terms 2

    Inclusion terms

    • Crohn's disease NOS
    • Regional enteritis NOS
  30. K50.91
    Crohn's disease, unspecified, with complications
    Header
  31. K50.911
    Crohn's disease, unspecified, with rectal bleeding
    BillableCC80
  32. K50.912
    Crohn's disease, unspecified, with intestinal obstruction
    BillableCC78 80
  33. K50.913
    Crohn's disease, unspecified, with fistula
    BillableCC80
  34. K50.914
    Crohn's disease, unspecified, with abscess
    BillableCC80
  35. K50.918
    Crohn's disease, unspecified, with other complication
    BillableCC80
  36. K50.919
    Crohn's disease, unspecified, with unspecified complications
    BillableCC80

CC/MCC: as a secondary diagnosis, unless the principal diagnosis is on the code’s PDX exclusion list (MS-DRG v44 Appendix C; list on the code card).

Sources of each column.

Instructions

At K50

Includes

  • granulomatous enteritis

Excludes1

  • ulcerative colitis (K51.-) K51

Use additional code

  • code to identify any associated fistulas, if applicable:
  • anal fistula (K60.3-) K60.3
  • anorectal fistula (K60.5-) K60.5
  • rectal fistula (K60.4-) K60.4
  • code to identify manifestations, such as:
  • pyoderma gangrenosum (L88) L88

Notes that also apply

Block K50-K52 instructions (Includes 1, Excludes1 2): printed on the block page.

Chapter 11 instructions (Excludes2 8): printed on the chapter 11 page.

Index entries

  • Enteritis (acute) (diarrheal) (hemorrhagic) (noninfective)regional (of) → K50.90
  • Enteritis (acute) (diarrheal) (hemorrhagic) (noninfective)regional (of)small intestine (duodenum) (ileum) (jejunum) → K50.00
  • Enteritis (acute) (diarrheal) (hemorrhagic) (noninfective)regional (of)large intestine (colon) (rectum) → K50.10
  • Enteritis (acute) (diarrheal) (hemorrhagic) (noninfective)regional (of)withcomplication → K50.919
  • Enteritis (acute) (diarrheal) (hemorrhagic) (noninfective)regional (of)small intestine (duodenum) (ileum) (jejunum)withcomplication → K50.019
  • Enteritis (acute) (diarrheal) (hemorrhagic) (noninfective)regional (of)large intestine (colon) (rectum)withcomplication → K50.119
  • Enteritis (acute) (diarrheal) (hemorrhagic) (noninfective)regional (of)withcomplicationrectal bleeding → K50.911
  • Enteritis (acute) (diarrheal) (hemorrhagic) (noninfective)regional (of)withcomplicationintestinal obstruction → K50.912
  • Enteritis (acute) (diarrheal) (hemorrhagic) (noninfective)regional (of)withcomplicationfistula → K50.913
  • Enteritis (acute) (diarrheal) (hemorrhagic) (noninfective)regional (of)withcomplicationabscess → K50.914
  • Enteritis (acute) (diarrheal) (hemorrhagic) (noninfective)regional (of)withcomplicationspecified complication NEC → K50.918
  • Enteritis (acute) (diarrheal) (hemorrhagic) (noninfective)regional (of)small intestine (duodenum) (ileum) (jejunum)withcomplicationrectal bleeding → K50.011
  • Enteritis (acute) (diarrheal) (hemorrhagic) (noninfective)regional (of)small intestine (duodenum) (ileum) (jejunum)withcomplicationintestinal obstruction → K50.012
  • Enteritis (acute) (diarrheal) (hemorrhagic) (noninfective)regional (of)small intestine (duodenum) (ileum) (jejunum)withcomplicationfistula → K50.013
  • Enteritis (acute) (diarrheal) (hemorrhagic) (noninfective)regional (of)small intestine (duodenum) (ileum) (jejunum)withcomplicationabscess → K50.014
  • Enteritis (acute) (diarrheal) (hemorrhagic) (noninfective)regional (of)small intestine (duodenum) (ileum) (jejunum)withcomplicationspecified complication NEC → K50.018
  • Enteritis (acute) (diarrheal) (hemorrhagic) (noninfective)regional (of)large intestine (colon) (rectum)withcomplicationrectal bleeding → K50.111
  • Enteritis (acute) (diarrheal) (hemorrhagic) (noninfective)regional (of)large intestine (colon) (rectum)withcomplicationintestinal obstruction → K50.112
  • Enteritis (acute) (diarrheal) (hemorrhagic) (noninfective)regional (of)large intestine (colon) (rectum)withcomplicationfistula → K50.113
  • Enteritis (acute) (diarrheal) (hemorrhagic) (noninfective)regional (of)large intestine (colon) (rectum)withcomplicationabscess → K50.114
  • Enteritis (acute) (diarrheal) (hemorrhagic) (noninfective)regional (of)large intestine (colon) (rectum)withcomplicationspecified complication NEC → K50.118
  • Enteritis (acute) (diarrheal) (hemorrhagic) (noninfective)regional (of)large intestine (colon) (rectum)withcomplicationsmall intestine (duodenum) (ileum) (jejunum) involvement → K50.80
  • Enteritis (acute) (diarrheal) (hemorrhagic) (noninfective)regional (of)small intestine (duodenum) (ileum) (jejunum)withcomplicationlarge intestine (colon) (rectum) involvement → K50.80
  • Enteritis (acute) (diarrheal) (hemorrhagic) (noninfective)regional (of)large intestine (colon) (rectum)withcomplicationsmall intestine (duodenum) (ileum) (jejunum) involvementwithcomplication → K50.819
  • Enteritis (acute) (diarrheal) (hemorrhagic) (noninfective)regional (of)small intestine (duodenum) (ileum) (jejunum)withcomplicationlarge intestine (colon) (rectum) involvementwithcomplication → K50.819
  • Enteritis (acute) (diarrheal) (hemorrhagic) (noninfective)regional (of)large intestine (colon) (rectum)withcomplicationsmall intestine (duodenum) (ileum) (jejunum) involvementwithcomplicationrectal bleeding → K50.811
  • Enteritis (acute) (diarrheal) (hemorrhagic) (noninfective)regional (of)small intestine (duodenum) (ileum) (jejunum)withcomplicationlarge intestine (colon) (rectum) involvementwithcomplicationrectal bleeding → K50.811
  • Enteritis (acute) (diarrheal) (hemorrhagic) (noninfective)regional (of)large intestine (colon) (rectum)withcomplicationsmall intestine (duodenum) (ileum) (jejunum) involvementwithcomplicationintestinal obstruction → K50.812
  • Enteritis (acute) (diarrheal) (hemorrhagic) (noninfective)regional (of)small intestine (duodenum) (ileum) (jejunum)withcomplicationlarge intestine (colon) (rectum) involvementwithcomplicationintestinal obstruction → K50.812
  • Enteritis (acute) (diarrheal) (hemorrhagic) (noninfective)regional (of)large intestine (colon) (rectum)withcomplicationsmall intestine (duodenum) (ileum) (jejunum) involvementwithcomplicationfistula → K50.813
  • Enteritis (acute) (diarrheal) (hemorrhagic) (noninfective)regional (of)small intestine (duodenum) (ileum) (jejunum)withcomplicationlarge intestine (colon) (rectum) involvementwithcomplicationfistula → K50.813
  • Enteritis (acute) (diarrheal) (hemorrhagic) (noninfective)regional (of)large intestine (colon) (rectum)withcomplicationsmall intestine (duodenum) (ileum) (jejunum) involvementwithcomplicationabscess → K50.814
  • Enteritis (acute) (diarrheal) (hemorrhagic) (noninfective)regional (of)small intestine (duodenum) (ileum) (jejunum)withcomplicationlarge intestine (colon) (rectum) involvementwithcomplicationabscess → K50.814
  • Enteritis (acute) (diarrheal) (hemorrhagic) (noninfective)regional (of)large intestine (colon) (rectum)withcomplicationsmall intestine (duodenum) (ileum) (jejunum) involvementwithcomplicationspecified complication NEC → K50.818
  • Enteritis (acute) (diarrheal) (hemorrhagic) (noninfective)regional (of)small intestine (duodenum) (ileum) (jejunum)withcomplicationlarge intestine (colon) (rectum) involvementwithcomplicationspecified complication NEC → K50.818

NCHS Alphabetic Index. Index first, then the Tabular List.

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