ICD-10-CM 2027 diagnosis code
R40.2332Coma scale, best motor response, abnormal flexion, at arrival to emergency department
R40.2332 is a valid, billable ICD-10-CM code for coma scale, best motor response, abnormal flexion, at arrival to emergency department. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.Short description: Coma scale, best motor response, abnormal flexion, EMR
Code last changed in FY2019 (effective October 1, 2018). Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About R40.2332
R40.2332 is the ICD-10-CM diagnosis code for coma scale, best motor response, abnormal flexion, at arrival to emergency department. It belongs to category R40 (Somnolence, stupor and coma), block R40-R46 (symptoms and signs involving cognition, perception, emotional state and behavior) and chapter 18 (symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.
The 7th character "2" means at arrival to emergency department.
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 951 (Other Factors Influencing Health Status, relative weight 0.5577), in MDC 23 (Factors Influencing Health Status and Other Contacts with Health Services), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
It is not acceptable as the principal diagnosis for an inpatient stay; it may be reported as a secondary diagnosis.
It has been part of ICD-10-CM since the code set took effect on October 1, 2015, and changed in FY2019 (title revised).
7th character
2at arrival to emergency department
Other encounter types for R40.233:
Notes that apply from higher levels
Instructions written at a parent level also apply to R40.2332.
› From R40.2 Coma
Broader instructions also apply from R40-R46 Symptoms and signs involving cognition, perception, emotional state and behavior and Chapter 18: Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified.
MS-DRG v44.0 grouping
All DRGs →Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.
MDC 23 · Factors Influencing Health Status and Other Contacts with Health Services
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- FY2019 (effective 10/1/2018): Title revised — was “Coma scale, best motor response, abnormal, at arrival to emergency department”
Common questions about R40.2332
Is R40.2332 billable?
- Yes. R40.2332 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
What does the "2" at the end of R40.2332 mean?
- It is the 7th character for at arrival to emergency department.
Can R40.2332 be used as a principal diagnosis?
- No. It is not acceptable as the principal diagnosis for an inpatient stay; it may be reported as a secondary diagnosis.
Is R40.2332 a CC or MCC?
- No. R40.2332 is neither a CC nor an MCC under MS-DRG v44.0.
What DRG does R40.2332 group to?
- R40.2332 is used in the MS-DRG v44.0 logic for MS-DRG 951 (Other Factors Influencing Health Status). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.