K56.0 Paralytic ileus

Billable ICD-10-CM code, FY2026. Acts as a Complication or Comorbidity (CC) as a secondary diagnosis.

Applicable to

• Paralysis of bowel
• Paralysis of colon
• Paralysis of intestine

Excludes1 (never code together)

• gallstone ileus (K56.3)
• ileus NOS (K56.7)
• obstructive ileus NOS (K56.69-)

Applies from K56 Paralytic ileus and intestinal obstruction without hernia

Excludes1 (never code together)

• congenital stricture or stenosis of intestine (Q41-Q42)
• cystic fibrosis with meconium ileus (E84.11)
• ischemic stricture of intestine (K55.1)
• meconium ileus NOS (P76.0)
• neonatal intestinal obstructions classifiable to P76.-
• obstruction of duodenum (K31.5)
• postprocedural intestinal obstruction (K91.3-)

Excludes2 (not included here)

• stenosis of anus or rectum (K62.4)

Risk adjustment (HCC)

• CMS-HCC V28: HCC 78 — Intestinal Obstruction/Perforation
• CMS-HCC V22: HCC 33 — Intestinal Obstruction/Perforation
• ESRD V24: HCC 33

MS-DRG index

Defines the logic of DRG(s) 388-390 in MDC 06.

Approximate ICD-9-CM (GEMs)

• 560.1 Paralytic ileus (approximate)

Code annotations containing back-references to K56.0

Back-references to K56

• Type 1 Excludes: P76.8 Other specified intestinal obstruction of newborn ("intestinal obstruction classifiable to K56.-")

Diagnosis Index entries for K56.0

• Ileus (bowel) (colon) (inhibitory) (intestine) › adynamic
• Ileus (bowel) (colon) (inhibitory) (intestine) › neurogenic
• Ileus (bowel) (colon) (inhibitory) (intestine) › paralytic
• Obstruction, obstructed, obstructive › intestine › adynamic
• Obstruction, obstructed, obstructive › intestine › neurogenic
• Obstruction, obstructed, obstructive › intestine › reflex
• Paralysis, paralytic (complete) (incomplete) › bowel, colon or intestine
• Paralysis, paralytic (complete) (incomplete) › colon
• Paralysis, paralytic (complete) (incomplete) › ileus
• Paralysis, paralytic (complete) (incomplete) › intestine
• Paresis › bowel, colon or intestine

Nearby codes

• K56 Paralytic ileus and intestinal obstruction without hernia
• K56.0 Paralytic ileus (this code)
• K56.1 Intussusception
• K56.2 Volvulus
• K56.3 Gallstone ileus
• K56.4 Other impaction of intestine
• K56.41 Fecal impaction