R40.2424 - Glasgow coma scale score 9-12, 24 hours or more after hospital admission

Version 2023
Billable Code
No Valid Principal Dx
7th Character Code
Unacceptable Principal Diagnosis
Convert to ICD-9
ICD-10:R40.2424
Short Description:Glasgow coma scale score 9-12, 24+hrs
Long Description:Glasgow coma scale score 9-12, 24 hours or more after hospital admission
Status: Valid for Submission
Version:ICD-10-CM 2023
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)

R40.2424 is a billable ICD-10 code used to specify a medical diagnosis of glasgow coma scale score 9-12, 24 hours or more after hospital admission. The code is valid during the fiscal year 2023 from October 01, 2022 through September 30, 2023 for the submission of HIPAA-covered transactions.

This code describes a circumstance which influences the patient's health status but not a current illness or injury. The code is unacceptable as a principal diagnosis.

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.

Code Edits

The Medicare Code Editor (MCE) detects and reports errors in the coding of claims data. The following ICD-10 Code Edits are applicable to this code:

Replacement Code

R402424 replaces the following previously assigned ICD-10 code(s):

Convert to ICD-9 Code

Source ICD-10 CodeTarget ICD-9 Code
R40.2424 -
No Map Flag -

Code History

Previous Code: R40.2423

Parent Code: R40.242

Next Code: R40.243