Question 1

Is R40 a billable ICD-10 code?

Accepted Answer

No, R40 is not a billable code. It is a category code that requires additional specificity. You must select a more specific code from the subcategories for billing purposes.

Question 2

What does ICD-10 code R40 mean?

Accepted Answer

ICD-10-CM code R40 represents Somnolence, stupor and coma. This code is part of the International Classification of Diseases, 10th Revision, Clinical Modification used for medical coding and billing in the United States.

Question 3

When was ICD-10 code R40 introduced?

Accepted Answer

Code R40 has been part of ICD-10-CM since 2016, when the coding system was mandated for use in the United States. This code was included in the original US implementation.

Question 4

What is the parent category for ICD-10 code R40?

Accepted Answer

The parent category for R40 is section:R40-R46 (Symptoms and signs involving cognition, perception, emotional state and behavior (R40-R46)). This hierarchical classification helps organize related diagnoses for more accurate coding.

Question 5

What conditions are excluded from R40?

Accepted Answer

Code R40 has Type 1 Excludes (mutually exclusive conditions) including: neonatal coma (P91.5); somnolence, stupor and coma in diabetes (E08-E13); somnolence, stupor and coma in hepatic failure (K72.-) and 1 more conditions. These conditions cannot be coded together with R40 as they represent different diagnoses.

R402026

Excludes14Not coded together

Excludes25Not included here

Notes9Additional information

Is R40 a billable ICD-10 code?

What does ICD-10 code R40 mean?

When was ICD-10 code R40 introduced?

What is the parent category for ICD-10 code R40?

What conditions are excluded from R40?