R40.2444 - Other coma, without documented Glasgow coma scale score, or with partial score reported, 24 hours or more after hospital admission

Version 2023
No Valid Principal Dx
ICD-10:R40.2444
Short Description:Other coma, without Glasgow, or w/part score, 24+hrs
Long Description:Other coma, without documented Glasgow coma scale score, or with partial score reported, 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)

R40.2444 is a billable ICD-10 code used to specify a medical diagnosis of other coma, without documented glasgow coma scale score, or with partial score reported, 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

R402444 replaces the following previously assigned ICD-10 code(s):

Convert to ICD-9 Code

Source ICD-10 CodeTarget ICD-9 Code
R40.2444 -
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Code History