2018 ICD-10-CM Diagnosis Code R40

Somnolence, stupor and coma

Type 1 Excludes
Type 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as R40. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • neonatal coma (
    ICD-10-CM Diagnosis Code P91.5

    Neonatal coma

      2016 2017 2018 Billable/Specific Code Code on Newborn Record
    P91.5
    )
  • somnolence, stupor and coma in diabetes (E08-E13
    ICD-10-CM Range E08-E13

    Diabetes mellitus

    • E08 Diabetes mellitus due to underlying cond...
    • E09 Drug or chemical induced diabetes mellit...
    • E10 Type 1 diabetes mellitus
    • E11 Type 2 diabetes mellitus
    • E13 Other specified diabetes mellitus
    )
  • somnolence, stupor and coma in hepatic failure (
    ICD-10-CM Diagnosis Code K72
    • K72 Hepatic failure, not elsewhere classified
      • K72.0 Acute and subacute hepatic failure
        • K72.00 Acute and subacute hepatic failure without co...
        • K72.01 …… with coma
      • K72.1 Chronic hepatic failure
      • K72.9 Hepatic failure, unspecified
    K72.-
    )
  • somnolence, stupor and coma in hypoglycemia (nondiabetic) (
    ICD-10-CM Diagnosis Code E15

    Nondiabetic hypoglycemic coma

      2016 2017 2018 Billable/Specific Code
    Includes
    • drug-induced insulin coma in nondiabetic
    • hyperinsulinism with hypoglycemic coma
    • hypoglycemic coma NOS
    E15
    )
The following code(s) above R40 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:
  • R00-R99
    2018 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
    2018 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
Code History
Code annotations containing back-references to R40:
ICD-10-CM Codes Adjacent To R40
R39.192 Position dependent micturition
R39.198 Other difficulties with micturition
R39.2 Extrarenal uremia
R39.8 Other symptoms and signs involving the genitourinary system
R39.81 Functional urinary incontinence
R39.82 Chronic bladder pain
R39.83 Unilateral non-palpable testicle
R39.84 Bilateral non-palpable testicles
R39.89 Other symptoms and signs involving the genitourinary system
R39.9 Unspecified symptoms and signs involving the genitourinary system
R40 Somnolence, stupor and coma
R40.0 Somnolence
R40.1 Stupor
R40.2 Coma
R40.20 Unspecified coma
R40.21 Coma scale, eyes open
R40.211 Coma scale, eyes open, never
R40.2110 …… unspecified time
R40.2111 …… in the field [EMT or ambulance]
R40.2112 …… at arrival to emergency department
R40.2113 …… at hospital admission

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