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K59

Other functional intestinal disorders

• change in bowel habit NOS (R19.4)
• intestinal malabsorption (K90.-)
• psychogenic intestinal disorders (F45.8)

• functional disorders of stomach (K31.-)

K59.0

Constipation

• fecal impaction (K56.41)
• incomplete defecation (R15.0)

K59.00

Constipation, unspecified

K59.01

Slow transit constipation

K59.02

Outlet dysfunction constipation

K59.03

Drug induced constipation

K59.04

Chronic idiopathic constipation

• Functional constipation

K59.09

Other constipation

• Chronic constipation

K59.1

Functional diarrhea

• diarrhea NOS (R19.7)
• irritable bowel syndrome with diarrhea (K58.0)

K59.2

Neurogenic bowel, not elsewhere classified

K59.3

Megacolon, not elsewhere classified

• congenital megacolon (aganglionic) (Q43.1)
• megacolon (due to) (in) Chagas' disease (B57.32)
• megacolon (due to) (in) Clostridium difficile (A04.7-)
• megacolon (due to) (in) Hirschsprung's disease (Q43.1)

• Dilatation of colon

K59.31

Toxic megacolon

K59.39

Other megacolon

• Megacolon NOS

K59.4

Anal spasm

• Proctalgia fugax

K59.8

Other specified functional intestinal disorders

• Atony of colon
• Pseudo-obstruction (acute) (chronic) of intestine

K59.9

Functional intestinal disorder, unspecified