Is K59.9 a billable code?
Yes. K59.9 is a billable ICD-10-CM code and can be used on claims and superbills for dates of service from October 1, 2026 to September 30, 2027.
ICD-10-CM FY2027 diagnosis code
K59.9: Functional intestinal disorder, unspecified
Billable codeValid for dates of service October 1, 2026 to September 30, 2027
K59.9 is a billable ICD-10-CM diagnosis code for functional intestinal disorder, unspecified. It is specific enough to use on an insurance claim, a superbill or a Good Faith Estimate.
Superbill GeneratorStart a superbill with K59.9 already added.Good Faith EstimateStart a cost estimate with K59.9 already added.CMS-1500 Claim FormFill a claim form with K59.9 in box 21.
Other codes in K59 Other functional intestinal disorders
K59.9 questions
What does K59.9 mean?
K59.9 is the ICD-10-CM code for Functional intestinal disorder, unspecified. It is in chapter 11, Diseases of the digestive system (K00-K95).
Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.