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K59.0

⚠ Non-billable (Header)

Constipation

Diseases of the digestive system (K00-K95)

⚠️ This is a category header code — not billable. Use a more specific child code below.

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❌ Excludes1

direct

Cannot be coded with K59.0

  • • fecal impaction (K56.41)

❌ Excludes1

inherited from K59

Rules from parent category K59: Other functional intestinal disorders

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

⚠️ Excludes2

direct

May be coded together if both conditions coexist

  • • incomplete defecation (R15.0)

⚠️ Excludes2

inherited from K59

Rules from parent category K59: Other functional intestinal disorders

  • • functional disorders of stomach (K31.-)

Child Codes (6)

K59.00Constipation, unspecifiedK59.01Slow transit constipationK59.02Outlet dysfunction constipationK59.03Drug induced constipationK59.04Chronic idiopathic constipationK59.09Other constipation

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Code Information

CodeK59.0
BillableNo — Header code
ParentK59
CategoryDiseases of the digestive system (K00-K95)
Excludes14 rule(s)
Excludes22 note(s)
Child codes6

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)