All ICD10 Codes

R40.23

Non-Billable
ChapterR00–R99
Ranksubcategory
Official Description

Coma scale, best motor response

Metadata & Insights
  • •2026 ICD-10-CM Edition - Effective October 1, 2025.
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 18: Symptoms, Signs and Abnormal Clinical and Laboratory Findings (R00-R99).
General instructions are available for the parent sections:
View CH18 NotesView R40-R46 NotesView R40 NotesView R40.2 Notes

Clinical Hierarchy

CH18Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)
R40-R46Symptoms and signs involving cognition, perception, emotional state and behavior (R40-R46)
R40Somnolence, stupor and coma
R40.2Coma
R40.23Coma scale, best motor response
R40.231Coma scale, best motor response, none
R40.232Coma scale, best motor response, extension
R40.233Coma scale, best motor response, abnormal flexion
R40.234Coma scale, best motor response, flexion withdrawal
R40.235Coma scale, best motor response, localizes pain
R40.236Coma scale, best motor response, obeys commands

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to R40.23:

categoryR40
Somnolence, stupor and coma
View context instructions
blockR40-R46
Symptoms and signs involving cognition, perception, emotional state and behavior (R40-R46)
View context instructions
chapterCH18
Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)
View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to R40.23. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

19 raw paths
Coma19 unique routes
with(19 variants)
motor response (none)→R40.23(19 variants)
abnormal→R40.23
abnormal extensor posturing to pain or noxious stimuli (< 2 years of age)→R40.23
abnormal flexure posturing to pain or noxious stimuli (0-5 years of age)→R40.23
extension→R40.23
extensor posturing to pain or noxious stimuli (2-5 years of age)→R40.23
flexion withdrawal→R40.23
flexion/decorticate posturing (< 2 years of age)→R40.23
localizes pain (2-5 years of age)→R40.23
normal or spontaneous movement (< 2 years of age)→R40.23
obeys commands (2-5 years of age)→R40.23
score of(6 variants)
1→R40.23
2→R40.23
3→R40.23
4→R40.23
5→R40.23
6→R40.23
withdraws from pain or noxious stimuli (0-5 years of age)→R40.23
withdraws to touch (< 2 years of age)→R40.23

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

Find Procedures (ICD-10-PCS)

Find surgical and procedural codes related to Coma scale, best motor response.

Search PCS Codes