Provisional assignment of new diseases of uncertain etiology or emergency use (U00-U49) ICD-10-CM
The U00–U49 section covers provisional assignment of new diseases of uncertain etiology or emergency use with 5 ICD-10-CM diagnosis codes, of which 3 are billable in fiscal year 2027. The section is organized into the 2 code ranges listed below.
Code Ranges in This Section 2 ranges · 5 codes
| Code Range | Title | Codes | Billable |
|---|---|---|---|
| U07 | Emergency use of U07 (U07) | 3 | 2 |
| U09 | Post COVID-19 condition (U09) | 2 | 1 |
The info icon previews the code ranges inside each row and its instructional notations from the official Tabular List.
About the U00–U49 Code Range
Vaping-related disorders, COVID-19, and conditions after COVID-19 appear together in this special-purpose block.
The emergency-use category U07 separates vaping-related disorder (U07.0) from COVID-19 (U07.1). U09 identifies a post-COVID-19 condition, with U09.9 titled post-COVID-19 condition, unspecified.
Questions About This Page
How many codes are in the U00-U49 range?
The U00-U49 range contains 5 ICD-10-CM diagnosis codes in FY 2027. 3 of them are billable, and the rest are category headers that organize the section.
What conditions does U00-U49 cover?
The range covers provisional assignment of new diseases of uncertain etiology or emergency use. The code ranges listed above break it into groups of related conditions, and each one links to its own page with the full code list.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
