K59.0 Constipation

⚠ Non-Billable ICD-10-CM 2026
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The ICD-10-CM code for Constipation is K59.0 (FY2026). It is a non-billable category code — select a more specific code below for claims.

Classification

Section
K55-K64: Other diseases of intestines (K55-K64)
Category K59
18 codes (14 billable)
FY2026 Status
Stable since FY2024
Excludes1
Not coded here. These conditions should NOT be coded together with K59.0.
  • fecal impaction (K56.41)
Excludes2
Not included here. These conditions are coded elsewhere but may be coded together if applicable.
  • incomplete defecation (R15.0)

Official Coding Guidelines

Chapter 11 reserved for future expansion

11. Chapter 11: Diseases of the Digestive System (K00-K95) Reserved for future guideline expansion

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.11

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

Related Codes

Parent Code

K59 Other functional intestinal disorders

More Specific Codes

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

Related Codes in K59

K59 Other functional intestinal disorders K59.00 Constipation, unspecified K59.01 Slow transit constipation K59.02 Outlet dysfunction constipation K59.03 Drug induced constipation K59.04 Chronic idiopathic constipation K59.09 Other constipation K59.1 Functional diarrhea K59.2 Neurogenic bowel, not elsewhere classified K59.3 Megacolon, not elsewhere classified K59.31 Toxic megacolon K59.39 Other megacolon K59.4 Anal spasm K59.8 Other specified functional intestinal disorders K59.81 Ogilvie syndrome K59.89 Other specified functional intestinal disorders K59.9 Functional intestinal disorder, unspecified
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Reviewed by Prajwal Shrestha, CPC, CRC
Certified Professional Coder (CPC) and Certified Risk Adjustment Coder (CRC) · AAPC Member ID 01997614 · About · Editorial policy · Content last reviewed: 2025-10-01

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