Supplementary factors related to causes of morbidity classified elsewhere (Y90-Y99) ICD-10-CM
The Y90–Y99 section covers supplementary factors related to causes of morbidity classified elsewhere with 396 ICD-10-CM diagnosis codes, of which 334 are billable in fiscal year 2027. The section is organized into the 5 code ranges listed below.
- These categories may be used to provide supplementary information concerning causes of morbidity. They are not to be used for single-condition coding.
Code Ranges in This Section 5 ranges · 396 codes
The info icon previews the code ranges inside each row and its instructional notations from the official Tabular List.
About the Y90–Y99 Code Range
These supplementary codes add details about an external cause, such as alcohol in the blood, where it occurred, and the activity involved.
Y90 separates evidence of alcohol involvement by blood alcohol level, including when the level is not specified. Y92 identifies the place, such as a residence, school, road, or farm. Y93 identifies the activity, including walking, water activities, sports, and exercise.
Y95 identifies a condition acquired in a care setting. Y99 distinguishes activities done for pay, military activities, volunteer activities, and other or unspecified external cause status.
Questions About This Page
How many codes are in the Y90-Y99 range?
The Y90-Y99 range contains 396 ICD-10-CM diagnosis codes in FY 2027. 334 of them are billable, and the rest are category headers that organize the section.
What conditions does Y90-Y99 cover?
The range covers supplementary factors related to causes of morbidity classified elsewhere. 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.
