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R40.233

R40.233: Coma scale, best motor response, abnormal flexion

Non-billable headerICD-10-CM

R40.233 is a non-billable header ICD-10-CM code for coma scale, best motor response, abnormal flexion. It cannot be billed on its own: choose one of the more specific child codes below. This code also requires a 7th character before it is complete.

This code requires a 7th character

The following appropriate 7th character is to be added to subcategory R40.23-:

0
unspecified time
1
in the field [EMT or ambulance]
2
at arrival to emergency department
3
at hospital admission
4
24 hours or more after hospital admission

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

  • Abnormal flexure posturing to pain or noxious stimuli (2-5 years of age)
  • Coma scale motor score of 3
  • Flexion/decorticate posturing (< 2 years of age)

Excludes1 inherited from the categories above R40.233

A category’s note binds every code beneath it.

Written on R40: Somnolence, stupor and coma

  • neonatal coma (P91.5)
  • somnolence, stupor and coma in diabetes (E08-E13)
  • somnolence, stupor and coma in hepatic failure (K72.-)
  • somnolence, stupor and coma in hypoglycemia (nondiabetic) (E15)

Other codes that can never be billed with R40.233

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • R41.82Altered mental status, unspecified

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Alphabetic index entries that lead here

  • Coma›with›motor response›abnormal
  • Coma›with›motor response›abnormal flexure posturing to pain or noxious stimuli(0-5 years of age)
  • Coma›with›motor response›flexion/decorticate posturing(< 2 years of age)
  • Coma›with›motor response›score of›3

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead R40.233

5 child codes. Green means billable.

Other codes under R40.23

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.