ICD-10-CM › Chapter 18 Symptoms, signs and abnormal... › R99
R99 - Ill-defined and unknown cause of mortality
1 ICD-10-CM codes sit in this section, all billable in FY2027. Every one has a page giving the years it was valid and what to use instead when it is not.
- 1 codes
- 1 billable FY2027
- 1 categories
Categories
Each of these is a three-character category. Most are not billable on their own - the billable code is one of the children listed on its page.
| Code | Description | Status |
|---|---|---|
| R99 | Ill-defined and unknown cause of mortality | Valid |
Or browse all ICD-10-CM codes by first character, check a list of codes with the batch validity checker, or see what changed in each release.