K59.9
Billable
ChapterK00–K95
Ranksubcategory
Official Description
Functional intestinal disorder, unspecified
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:
Clinical Hierarchy
Applicable Ancestor Context
The following parent sections contain instructions or notes that apply to K59.9:
Alphabetic Index Mentions
These are Diagnosis Index lookup paths that route to K59.9. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.
12 raw paths
Complaint2 unique routes
Disease, diseased4 unique routes
Disorder (of)1 unique routes
Distress1 unique routes
Dysfunction2 unique routes
Syndrome1 unique routes
Upset1 unique routes
MS-DRG Classification
This code is grouped within the following Diagnosis Related Group(s) for clinical reimbursement:
Cross Reference
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