U ICD-10-CM Categories: Category Index
Browse 2 top-level ICD-10-CM categories beginning with U, then follow their complete FY 2027 child-code hierarchies.
Categories beginning with U
Open a category to continue through its complete hierarchy of more specific codes.
Source and release
- Data release
- U.S. ICD-10-CM · FY 2027
- Effective date
- Oct 1, 2026
- Publisher
- Vero Scribe Inc.
This category index is generated from Vero’s repository-backed ICD-10-CM hierarchy. Every listed category is a top-level record, and each linked category page exposes its direct child codes.
Frequently asked questions
Which ICD-10-CM categories begin with U?
This index lists 2 top-level categories beginning with U from Vero’s FY 2027 U.S. ICD-10-CM reference dataset.
How do I find a more specific U code?
Open a category below, then follow its linked child-code hierarchy until you reach the code supported by the documentation.
Which ICD-10-CM release does this U index use?
The index uses the FY 2027 U.S. ICD-10-CM release and the repository-backed hierarchy displayed on each linked code page.
Is every U category billable?
No. These are top-level categories used for navigation. Follow the hierarchy to a sufficiently specific code and confirm the active code set, official guidance, and payer requirements.