I99
Non-billableOther and unspecified disorders of circulatory system
I99 is the ICD-10-CM code for Other and unspecified disorders of circulatory system. It is a non-billable category code — use a more specific child code such as I99.8 for billing.
- Status
- Header (non-billable)
- Chapter
- I00-I99
- Subcodes
- 2
- Edition
- FY2026
I00-I99 Diseases of the circulatory system
No additional coding notes for this code.
Frequently asked questions
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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