Coma scale, best motor response, none

Not billableICD-10-CM diagnosis code.

This code exists but cannot be submitted on its own. It groups the more specific codes beneath it.

A category header for its whole life, FY2016 onwards. It has never been valid for submission on its own.

Submit one of these 5 more specific codes instead:

R40.2310 Coma scale, best motor response, none, unspecified time
R40.2311 Coma scale, best motor response, none, in the field [EMT or ambulance]
R40.2312 Coma scale, best motor response, none, at arrival to emergency department
R40.2313 Coma scale, best motor response, none, at hospital admission
R40.2314 Coma scale, best motor response, none, 24 hours or more after hospital admission

What has happened to this code

Every change the publisher made, from 2014 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.

FY2014 Added to the draft code set draft Coma scale, best motor response, none

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 > motor response
Coma > with > motor response > score of > 1

Codes in the same group

Code	Description	Status
R40.232	Coma scale, best motor response, extension	Not billable
R40.233	Coma scale, best motor response, abnormal flexion	Not billable
R40.234	Coma scale, best motor response, flexion withdrawal	Not billable
R40.235	Coma scale, best motor response, localizes pain	Not billable
R40.236	Coma scale, best motor response, obeys commands	Not billable