Is I99.9 a billable code?
Yes. I99.9 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
I99.9: Unspecified disorder of circulatory system
Billable codeValid for dates of service October 1, 2026 to September 30, 2027
I99.9 is a billable ICD-10-CM diagnosis code for unspecified disorder of circulatory system. It is specific enough to use on an insurance claim, a superbill or a Good Faith Estimate.
Superbill GeneratorStart a superbill with I99.9 already added.Good Faith EstimateStart a cost estimate with I99.9 already added.CMS-1500 Claim FormFill a claim form with I99.9 in box 21.
Other codes in I99 Other and unspecified disorders of circulatory system
I99.9 questions
What does I99.9 mean?
I99.9 is the ICD-10-CM code for Unspecified disorder of circulatory system. It is in chapter 9, Diseases of the circulatory system (I00-I99).
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.