ICD-10-CM › R00-R99 › R40-R46 › R40.22 Coma scale, best verbal response › R40.222

R40.222

Coma scale, best verbal response, incomprehensible words

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:

  • R40.2220 Coma scale, best verbal response, incomprehensible words, unspecified time
  • R40.2221 Coma scale, best verbal response, incomprehensible words, in the field [EMT or ambulance]
  • R40.2222 Coma scale, best verbal response, incomprehensible words, at arrival to emergency department
  • R40.2223 Coma scale, best verbal response, incomprehensible words, at hospital admission
  • R40.2224 Coma scale, best verbal response, incomprehensible words, 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.

  1. FY2014 Added to the draft code set draft Coma scale, best verbal response, incomprehensible words

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.

Codes in the same group

CodeDescriptionStatus
R40.221 Coma scale, best verbal response, none Not billable
R40.223 Coma scale, best verbal response, inappropriate words Not billable
R40.224 Coma scale, best verbal response, confused conversation Not billable
R40.225 Coma scale, best verbal response, oriented Not billable