R40
R40: Somnolence, stupor and coma
Non-billable headerICD-10-CM
R40 is a non-billable header ICD-10-CM code for somnolence, stupor and coma. It cannot be billed on its own: choose one of the more specific child codes below.
Excludes1: never code together
These conditions cannot occur together. Billing both on the same encounter is a denial.
Other codes that can never be billed with R40
Their own Excludes1 notes name this code, so the conflict is not listed above.
Risk adjustment
No CMS-HCC V28 category: this code does not change a RAF score.
Code history
Unchanged in every release from FY2024 to FY2027.
Code to one of these instead R40
5 child codes. Green means billable.