AutoICD API

R40.21

Non-billable

Coma scale, eyes open

Coma scale, eyes open

This is a header/category code. For billing purposes, use a more specific child code from the list below.

Status

Non-billable / Header

Block

R40-R46

Parent Code

R40.2

Child Codes

4

Coding Notes

Excludes 1

Codes that cannot be used together with this code (mutual exclusion)

  • 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)

Excludes 2

Conditions not included here, but the patient may have both

  • abnormal findings on antenatal screening of mother (O28.-)
  • certain conditions originating in the perinatal period (P04-P96)
  • signs and symptoms classified in the body system chapters
  • signs and symptoms of breast (N63, N64.5)
  • symptoms and signs constituting part of a pattern of mental disorder (F01-F99)

Code First

The underlying condition must be sequenced before this code

  • any associated:
  • fracture of skull (S02.-)
  • intracranial injury (S06.-)

7th Character Definitions

  • 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

Child Codes (4)

R40.211

Coma scale, eyes open, never

R40.212

Coma scale, eyes open, to pain

R40.213

Coma scale, eyes open, to sound

R40.214

Coma scale, eyes open, spontaneous

Also Known As / Clinical Terms

UMLS

Frequently Asked Questions

What is the ICD-10 code for coma scale, eyes open?

The ICD-10-CM code for coma scale, eyes open is R40.21. The full clinical description is "Coma scale, eyes open". R40.21 is a non-billable header code. Use a more specific child code for billing purposes.

What does ICD-10 code R40.21 mean?

ICD-10-CM code R40.21 represents "Coma scale, eyes open". It is classified under Chapter 18: Symptoms, Signs and Abnormal Clinical and Laboratory Findings and is a non-billable header code. Use a more specific child code for billing purposes.

Is R40.21 a billable code?

No, R40.21 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 4 child codes under R40.21.

What chapter is R40.21 in?

R40.21 is in Chapter 18: Symptoms, Signs and Abnormal Clinical and Laboratory Findings (codes R00-R99).

What codes cannot be used with R40.21?

R40.21 has Excludes1 notes indicating codes that cannot be used together with it, including: neonatal coma (P91.5); somnolence, stupor and coma in diabetes (E08-E13); somnolence, stupor and coma in hepatic failure (K72.-); and 1 more.

What are the subcategories under R40.21?

R40.21 has 4 child codes, including: R40.211 (Coma scale, eyes open, never), R40.212 (Coma scale, eyes open, to pain), R40.213 (Coma scale, eyes open, to sound), R40.214 (Coma scale, eyes open, spontaneous).

What are the UMLS CUIs for R40.21?

R40.21 is linked to 1 UMLS Concept Unique Identifier: C2830347. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.

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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.