R40.21
Coma scale, eyes open
- Release
- FY 2027
- Effective
Hierarchy
Where R40.21 sits in the official hierarchy. Each level is the code it is classified under.
- R40 Somnolence, stupor and coma
- R40.2 Parent Coma
- R40.21 This code Coma scale, eyes open
Official Coding Notes
Reproduced verbatim from the FY 2027 ICD-10-CM files. Notes labelled as inherited are declared on a parent code and apply here too.
Excludes1
somnolence, stupor and coma in diabetes (E08-E13)
Inherited from R40 — Somnolence, stupor and coma
7th Character
The following appropriate 7th character is to be added to subcategory R40.21-:
7th Character
0 - unspecified time
7th Character
1 - in the field [EMT or ambulance]
7th Character
2 - at arrival to emergency department
7th Character
3 - at hospital admission
7th Character
4 - 24 hours or more after hospital admission
More Specific Codes
4 codes under R40.21
Version History
How R40.21 appears in each release imported from the official files, newest first.
-
FY 2027 Effective
CurrentComa scale, eyes open
-
FY 2026 Effective
UnchangedComa scale, eyes open
Related Codes
Data Source
Code information on this page is derived from the FY 2027 ICD-10-CM files published by CDC NCHS and CMS.
- Release
- FY 2027
- Effective
- Source file
- icd10cm-code-descriptions-2027.zip
Official ICD-10-CM source files (opens in a new tab)
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