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ICD-10-CM 2027 diagnosis code

R40.211Coma scale, eyes open, never

Not billable — use a more specific codeRequires 7th character

R40.211 is a header code, so it can't be reported by itself. Choose one of the 5 more specific codes beneath it and add the required 7th character.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About R40.211

R40.211 is the ICD-10-CM diagnosis code for coma scale, eyes open, never. It belongs to category R40 (Somnolence, stupor and coma), block R40-R46 (symptoms and signs involving cognition, perception, emotional state and behavior) and chapter 18 (symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified). It is a header code, so it can't be reported by itself; one of its 5 subcodes must be used instead.

Within R40.21 (coma scale, eyes open), R40.211 is specifically for coma scale, eyes open, never. Related codes cover to pain (R40.212), to sound (R40.213) and spontaneous (R40.214).

Codes in this range require a 7th character: 0 for unspecified time, 1 for in the field [EMT or ambulance], 2 for at arrival to emergency department, 3 for at hospital admission and 4 for 24 hours or more after hospital admission. Use placeholder "X" characters to fill any empty positions before the 7th character.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

7th character

The following appropriate 7th character is to be added to subcategory R40.21-:

Coding notes

Applicable toConditions and synonyms classified to this code
  • Coma scale eye opening score of 1

Notes that apply from higher levels

Instructions written at a parent level also apply to R40.211.

› From R40.2 Coma
Note
  • One code from each subcategory, R40.21-R40.23, is required to complete the coma scale
Code first
  • any associated:
  • fracture of skull (S02.-)
  • intracranial injury (S06.-)
› From R40 Somnolence, stupor and coma
Excludes1
  • 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)

Broader instructions also apply from R40-R46 Symptoms and signs involving cognition, perception, emotional state and behavior and Chapter 18: Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified.

Alphabetic index entries

2 entries

Terms in the official ICD-10-CM index that lead to R40.211.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about R40.211

Is R40.211 billable?

No. R40.211 is a header code. Report one of its more specific subcodes instead.