ICD-10-CM › R00-R99 › R40-R46 › R40.224 Coma scale, best verbal response,... › R40.2242
Coma scale, best verbal response, confused conversation, at arrival to emergency department
ValidICD-10-CM diagnosis code.
Valid for claims with a date of service in the current code year.
What has happened to this code
Every change the publisher made, from 2007 to now. Entries marked draft are from the pre-implementation releases: ICD-10 took effect on 1 October 2015, so nothing before FY2016 was ever valid on a claim.
- FY2007 Added to the draft code set draft Coma scale, best verbal response, confused conversation, at arrival to emergency department
Official coding rules
Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.
Inherited from R40 Somnolence, stupor and coma
Excludes1 - never coded here
- neonatal coma (P91.5)
- somnolence, stupor and coma in diabetes (E08-E13)
- somnolence, stupor and coma in hepatic failure (K72.-)
- somnolence, stupor and coma in hypoglycemia (nondiabetic) (E15)
Inherited from the R40-R46 section Symptoms and signs involving cognition, perception, emotional state and behavior (R40-R46)
Excludes2 - not included here
- symptoms and signs constituting part of a pattern of mental disorder (F01-F99)
How CDC's index refers to this code
Wording from the official alphabetic index. Much of it appears nowhere in the code description, which is why a search for the everyday phrase so often finds nothing.
- Comatose
- Unconscious
- Symptoms NEC > involving > awareness > coma
- Symptoms NEC > involving > cognitive functions > coma
- Coma > with > verbal response > score of > 4
- Coma > with > verbal response > irritable cries
- Coma > with > verbal response > inappropriate words
- Coma > with > verbal response > confused conversation
Codes in the same group
| Code | Description | Status |
|---|---|---|
| R40.2240 | Coma scale, best verbal response, confused conversation, unspecified time | Valid |
| R40.2241 | Coma scale, best verbal response, confused conversation, in the field [EMT or ambulance] | Valid |
| R40.2243 | Coma scale, best verbal response, confused conversation, at hospital admission | Valid |
| R40.2244 | Coma scale, best verbal response, confused conversation, 24 hours or more after hospital admission | Valid |