ICD-10-CM Codes
R00-R99
R40-R46
R40-
2023 ICD-10-CM Diagnosis Code R40.2430

2023 ICD-10-CM Diagnosis Code R40.2430

Glasgow coma scale score 3-8, unspecified time

2017 - New Code

2018

2019

2020

2021

2022

2023

Billable/Specific Code

R40.2430 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
The 2023 edition of ICD-10-CM R40.2430 became effective on October 1, 2022.
This is the American ICD-10-CM version of R40.2430 - other international versions of ICD-10 R40.2430 may differ.

The following code(s) above R40.2430 contain annotation back-references

Annotation Back-References

In this context, annotation back-references refer to codes that contain:

Applicable To annotations, or
Code Also annotations, or
Code First annotations, or
Excludes1 annotations, or
Excludes2 annotations, or
Includes annotations, or
Note annotations, or
Use Additional annotations

that may be applicable to R40.2430:

R00-R99
2023 ICD-10-CM Range R00-R99
Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
Note
- This chapter includes symptoms, signs, abnormal results of clinical or other investigative procedures, and ill-defined conditions regarding which no diagnosis classifiable elsewhere is recorded.
- Signs and symptoms that point rather definitely to a given diagnosis have been assigned to a category in other chapters of the classification. In general, categories in this chapter include the less well-defined conditions and symptoms that, without the necessary study of the case to establish a final diagnosis, point perhaps equally to two or more diseases or to two or more systems of the body. Practically all categories in the chapter could be designated 'not otherwise specified', 'unknown etiology' or 'transient'. The Alphabetical Index should be consulted to determine which symptoms and signs are to be allocated here and which to other chapters. The residual subcategories, numbered .8, are generally provided for other relevant symptoms that cannot be allocated elsewhere in the classification.
- The conditions and signs or symptoms included in categories R00-R94 consist of:
- (a) cases for which no more specific diagnosis can be made even after all the facts bearing on the case have been investigated;
- (b) signs or symptoms existing at the time of initial encounter that proved to be transient and whose causes could not be determined;
- (c) provisional diagnosis in a patient who failed to return for further investigation or care;
- (d) cases referred elsewhere for investigation or treatment before the diagnosis was made;
- (e) cases in which a more precise diagnosis was not available for any other reason;
- (f) certain symptoms, for which supplementary information is provided, that represent important problems in medical care in their own right.
Type 2 Excludes
- 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, signs and abnormal clinical and laboratory findings, not elsewhere classified
R40-R46
2023 ICD-10-CM Range R40-R46
Symptoms and signs involving cognition, perception, emotional state and behavior
Type 2 Excludes
- symptoms and signs constituting part of a pattern of mental disorder (F01-F99)
Symptoms and signs involving cognition, perception, emotional state and behavior
R40
ICD-10-CM Diagnosis Code R40
Somnolence, stupor and coma
Type 1 Excludes
- 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)
Somnolence, stupor and coma
R40.2
ICD-10-CM Diagnosis Code R40.2
Coma
Code First
- any associated:
- fracture of skull (S02.-)
- intracranial injury (S06.-)
Note
- One code from each subcategory, R40.21-R40.23, is required to complete the coma scale
Coma
R40.24
ICD-10-CM Diagnosis Code R40.24
Glasgow coma scale, total score
Note
- Assign a code from subcategory R40.24, when only the total coma score is documented
Glasgow coma scale, total score

ICD-10-CM R40.2430 is grouped within Diagnostic Related Group(s) (MS-DRG v40.0):

951 Other factors influencing health status

Convert R40.2430 to ICD-9-CM

Code History

2017 (effective 10/1/2016): New code
2018 (effective 10/1/2017): No change
2019 (effective 10/1/2018): No change
2020 (effective 10/1/2019): No change
2021 (effective 10/1/2020): No change
2022 (effective 10/1/2021): No change
2023 (effective 10/1/2022): No change

ICD-10-CM Codes Adjacent To R40.2430

R40.2412 …… at arrival to emergency department

R40.2413 …… at hospital admission

R40.2414 …… 24 hours or more after hospital admission

R40.242 Glasgow coma scale score 9-12

R40.2420 …… unspecified time

R40.2421 …… in the field [EMT or ambulance]

R40.2422 …… at arrival to emergency department

R40.2423 …… at hospital admission

R40.2424 …… 24 hours or more after hospital admission

R40.243 Glasgow coma scale score 3-8

R40.2430 …… unspecified time

R40.2431 …… in the field [EMT or ambulance]

R40.2432 …… at arrival to emergency department

R40.2433 …… at hospital admission

R40.2434 …… 24 hours or more after hospital admission

R40.244 Other coma, without documented Glasgow coma scale score, or with partial score reported

R40.2440 …… unspecified time

R40.2441 …… in the field [EMT or ambulance]

R40.2442 …… at arrival to emergency department

R40.2443 …… at hospital admission

R40.2444 …… 24 hours or more after hospital admission

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.

2023 ICD-10-CM Diagnosis Code R40.2430

Glasgow coma scale score 3-8, unspecified time

Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified

Symptoms and signs involving cognition, perception, emotional state and behavior

Somnolence, stupor and coma

Coma

Glasgow coma scale, total score