DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Block · Chapter 11

K55-K64 Other diseases of intestines (K55-K64)

Block K55-K64 groups 10 categories with 157 billable codes in FY2027.

Where it sits

  1. Chapter 11 Diseases of the digestive system (K00-K95)
  2. K55-K64 Other diseases of intestines (K55-K64)

Neighbouring blocks

Categories
10
Billable codes
157
CC codes
37
MCC codes
38
HCC V28 codes
18
New FY2027
0

Categories in K55-K64

  • K55

    Vascular disorders of intestine

    Wilkie's disease or syndrome → K55.1

    • 27 billable codes
    • 3 CC
    • 23 MCC
  • K56

    Paralytic ileus and intestinal obstruction without hernia

    Enterostenosis → K56.699

    • 16 billable codes
    • 14 CC
    • 1 MCC
    • 16 with HCC
  • K57

    Diverticular disease of intestine

    Diverticulosis → K57.90

    • 24 billable codes
    • 8 CC
    • 12 MCC
  • K58

    Irritable bowel syndrome

    Irritable, irritabilitycolon → K58.9

    • 5 billable codes
  • K59

    Other functional intestinal disorders

    Dyschezia → K59.00

    • 14 billable codes
    • 3 CC
    • 1 with HCC
  • K60

    Fissure and fistula of anal and rectal regions

    Fistula (cutaneous)in ano → K60.30

    • 30 billable codes
  • K61

    Abscess of anal and rectal regions

    Furuncleanus → K61.0

    • 7 billable codes
    • 4 CC
  • K62

    Other diseases of anus and rectum

    BRBPR → K62.5

    • 12 billable codes
    • 2 CC
  • K63

    Other diseases of intestine

    Coloptosis → K63.4

    • 14 billable codes
    • 3 CC
    • 2 MCC
    • 1 with HCC
  • K64

    Hemorrhoids and perianal venous thrombosis

    Piles → K64.9

    • 8 billable codes

Index main terms

  • Fistula (cutaneous) → K60, K61, K63 (89 entries)
  • Abscess (connective tissue) (embolic) (fistulous) (infective) (metastatic) (multiple) (pernicious) (pyogenic) (septic) → K57, K61, K63 (29 entries)
  • Ischemia, ischemic → K55 (22 entries)
  • Diverticulitis (acute) → K57 (21 entries)
  • Obstruction, obstructed, obstructive → K56, K62 (20 entries)
  • Disease, diseased → K55, K59, K62, K63 (19 entries)
  • Syndrome → K55, K56, K58, K59 (19 entries)
  • Ulcer, ulcerated, ulcerating, ulceration, ulcerative → K62, K63, K64 (19 entries)
  • Perforation, perforated (nontraumatic) (of) → K57, K63 (18 entries)
  • Hemorrhoids (bleeding) (without mention of degree) → K64 (15 entries)
  • Rupture, ruptured → K57, K63 (15 entries)
  • Infarct, infarction → K55 (14 entries)
  • Enterocolitis → K55 (13 entries)
  • Adhesions, adhesive (postinfective) → K56 (12 entries)
  • Irritable, irritability → K58, K59 (12 entries)

+141 more main terms; the search box finds them by word.

Block instructions

Notes that also apply

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