ICD-10 Diagnosis Code R40.221

Coma scale, best verbal response, none

Diagnosis Code R40.221

ICD-10: R40.221
Short Description: Coma scale, best verbal response, none
Long Description: Coma scale, best verbal response, none
This is the 2017 version of the ICD-10-CM diagnosis code R40.221

Not Valid for Submission
The code R40.221 is a "header" and not valid for submission for HIPAA-covered transactions.

Code Classification
  • Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00–R99)
    • Symptoms and signs involving cognition, perception, emotional state and behavior (R40-R46)
      • Somnolence, stupor and coma (R40)

Information for Medical Professionals

According to ICD-10-CM guidelines this code should not to be used as a principal diagnosis code when a related definitive diagnosis has been established.
Convert to ICD-9 Additional informationCallout TooltipGeneral Equivalence Map
The ICD-10 and ICD-9 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.

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