K59.01

Billable

ChapterK00–K95

Ranksubcategory

Official Description

Slow transit constipation

Metadata & Insights

•2026 ICD-10-CM Edition - Effective October 1, 2025.
•Billable/specific code (valid for reimbursement).
•Chapter 11: Diseases of the Digestive System (K00-K95).

General instructions are available for the parent sections:

View CH11 Notes View K59 Notes View K59.0 Notes

Clinical Hierarchy

CH11Diseases of the digestive system (K00-K95)

K55-K64Other diseases of intestines (K55-K64)

K59Other functional intestinal disorders

K59.0Constipation

K59.01Slow transit constipation

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to K59.01:

subcategoryK59.0

Constipation

View context instructions

categoryK59

Other functional intestinal disorders

View context instructions

chapterCH11

Diseases of the digestive system (K00-K95)

View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to K59.01. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

1 raw paths

Constipation (atonic) (neurogenic) (simple) (spastic)1 unique routes

slow transit→K59.01

MS-DRG Classification

2026 v43.1

This code is grouped within the following Diagnosis Related Group(s) for clinical reimbursement:

DRG 391

Esophagitis, Gastroenteritis and Miscellaneous Digestive Disorders with MCC

DRG 392

Esophagitis, Gastroenteritis and Miscellaneous Digestive Disorders without MCC

Cross Reference

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