ICD-10-CM Code R40.2242

Coma scale, best verbal response, confused conversation, at arrival to emergency department

Version 2020 Billable Code No Valid Principal Dx Unacceptable Principal Diagnosis

Valid for Submission

R40.2242 is a billable code used to specify a medical diagnosis of coma scale, best verbal response, confused conversation, at arrival to emergency department. The code is valid for the year 2020 for the submission of HIPAA-covered transactions.

The code R40.2242 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.

ICD-10:R40.2242
Short Description:Coma scale, best verbal response, confused conversation, EMR
Long Description:Coma scale, best verbal response, confused conversation, at arrival to emergency department

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:

  • Unacceptable principal diagnosis - There are selected codes that describe a circumstance which influences an individual’s health status but not a current illness or injury, or codes that are not specific manifestations but may be due to an underlying cause. These codes are considered unacceptable as a principal diagnosis.

Convert R40.2242 to ICD-9

  • - (No Map Flag)

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)

Code History

  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
    (First year ICD-10-CM implemented into the HIPAA code set)
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020