ICD-10-CM · Chapter 11 · K00–K95
K59.3
Megacolon, not elsewhere classified
Diseases of the digestive system
Heads up:this is a parent code. It's typically not directly billable — you need to drill down to a more specific child code (one with additional digits) to use on a claim.
Quick facts
- Code
- K59.3
- Type
- Category / header (non-billable)
- ICD-10-CM chapter
- Chapter 11 — Diseases of the digestive system
- Category
- K59 — Other functional intestinal disorders
- Specificity
- 4 characters
How coders use this code
ICD-10-CM K59.3 is a category (header) for megacolon, not elsewhere classified. It is generally not reported directly on a claim — coders drill down to a more specific child code (one with additional characters) that matches the documentation. Use the related codes below to find the billable code that fits, and verify against the annual NCHS/CMS guidelines.
Related codes in K59
- K59Other functional intestinal disorders
- K59.0Constipation
- K59.00Constipation, unspecified
- K59.01Slow transit constipation
- K59.02Outlet dysfunction constipation
- K59.03Drug induced constipation
- K59.04Chronic idiopathic constipation
- K59.09Other constipation
- K59.1Functional diarrhea
- K59.2Neurogenic bowel, not elsewhere classified
- K59.31Toxic megacolon
- K59.39Other megacolon
- K59.4Anal spasm
- K59.8Other specified functional intestinal disorders
- K59.81Ogilvie syndrome
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