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R40.21 - Coma scale, eyes open


The ICD 10 Code for Coma scale, eyes open is listed as R40.21.
Additional information concerning this code and description can be found below including ICD 9 crosswalks / GEMS, chapter information, and DRGs where available.

ICD 10 CM Field Value
Diagnosis Code: R40.21
Description: Coma scale, eyes open
  • The following appropriate 7th character is to be added to subcategory R40.21-:
  • 0 - unspecified time
  • 1 - in the field [EMT or ambulance]
  • 2 - at arrival to emergency department
  • 3 - at hospital admission
  • 4 - 24 hours or more after hospital admission
Chapter Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)
Block Symptoms and signs involving cognition, perception, emotional state and behavior (R40-R46)
Parent R40.2 - Coma
ICD-10-CM Children (deeper level / typically more specific) of R40.21:
R40.211 - Coma scale, eyes open, never
R40.212 - Coma scale, eyes open, to pain
R40.213 - Coma scale, eyes open, to sound
R40.214 - Coma scale, eyes open, spontaneous
ICD-10-CM Siblings (same level / similar specificity) of R40.21:
R40.20 - Unspecified coma
R40.22 - Coma scale, best verbal response
R40.23 - Coma scale, best motor response
R40.24 - Glasgow coma scale, total score