AutoICD API

R40

Non-billable

Somnolence, stupor and coma

Somnolence, stupor and coma

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

Child Codes

5

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)

Child Codes (5)

R40.0

Somnolence

BillableR40.1

Stupor

BillableR40.2

Coma

R40.3

Persistent vegetative state

BillableR40.4

Transient alteration of awareness

Billable

Also Known As / Clinical Terms

UMLS

Frequently Asked Questions

What is ICD-10 code R40?

ICD-10-CM code R40 represents "Somnolence, stupor and coma". It is a non-billable header code — use a more specific child code for billing purposes.

Is R40 a billable code?

No, R40 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 5 child codes under R40.

What chapter is R40 in?

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

What codes cannot be used with R40?

R40 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?

R40 has 5 child codes, including: R40.0 (Somnolence), R40.1 (Stupor), R40.2 (Coma), R40.3 (Persistent vegetative state), and 1 more.

What are the UMLS CUIs for R40?

R40 is linked to 1 UMLS Concept Unique Identifier: C0495687. 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.