ICD-10 Diagnosis Code R40.2420

Glasgow coma scale score 9-12, unspecified time

Diagnosis Code R40.2420

ICD-10: R40.2420
Short Description: Glasgow coma scale score 9-12, unspecified time
Long Description: Glasgow coma scale score 9-12, unspecified time
This is the 2017 version of the ICD-10-CM diagnosis code R40.2420

Valid for Submission
The code R40.2420 is valid for submission for HIPAA-covered transactions.

New 2017 ICD-10 Code
R40.2420 is new to ICD-10 code set for the FY 2017, effective October 1, 2016.

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.
  • Glasgow coma scale, 10
  • Glasgow coma scale, 11
  • Glasgow coma scale, 12
  • Glasgow coma scale, 9

Replacement Code Additional informationCallout TooltipReplacement Code
The National Center for Health Statistics (NCHS) has published an update to the ICD-10-CM diagnosis codes which became effective October 1, 2016. This is a new and revised code for the FY 2017 (October 1, 2016-September 30, 2017).

This code replaces the following previously assigned ICD-10 code(s) listed below:
  • R40.242 - Glasgow coma scale score 9-12

Previous Code
Previous Code R40.242
Next Code
R40.2421 Next Code