ICD-10-CM Codes
R00-R99
R50-R69
R55-
2023 ICD-10-CM Diagnosis Code R55

2023 ICD-10-CM Diagnosis Code R55

Syncope and collapse

2016

2017

2018

2019

2020

2021

2022

2023

Billable/Specific Code

R55 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 R55 became effective on October 1, 2022.
This is the American ICD-10-CM version of R55 - other international versions of ICD-10 R55 may differ.

Applicable To

Blackout
Fainting
Vasovagal attack

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 R55. 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.

cardiogenic shock (
ICD-10-CM Diagnosis Code R57.0
Cardiogenic shock
Type 2 Excludes
- septic shock (R65.21)
R57.0
)
carotid sinus syncope (
ICD-10-CM Diagnosis Code G90.01
Carotid sinus syncope
Applicable To
- Carotid sinus syndrome
G90.01
)
heat syncope (
ICD-10-CM Diagnosis Code T67.1
Heat syncope
Applicable To
- Heat collapse
T67.1
)
neurocirculatory asthenia (
ICD-10-CM Diagnosis Code F45.8
Other somatoform disorders
Applicable To
- Psychogenic dysmenorrhea
- Psychogenic dysphagia, including 'globus hystericus'
- Psychogenic pruritus
- Psychogenic torticollis
- Somatoform autonomic dysfunction
- Teeth grinding
Type 1 Excludes
- sleep related teeth grinding (G47.63)
F45.8
)
neurogenic orthostatic hypotension (
ICD-10-CM Diagnosis Code G90.3
Multi-system degeneration of the autonomic nervous system
Applicable To
- Neurogenic orthostatic hypotension [Shy-Drager]
Type 1 Excludes
- orthostatic hypotension NOS (I95.1)
G90.3
)
orthostatic hypotension (
ICD-10-CM Diagnosis Code I95.1
Orthostatic hypotension
Applicable To
- Hypotension, postural
Type 1 Excludes
- neurogenic orthostatic hypotension [Shy-Drager] (G90.3)
- orthostatic hypotension due to drugs (I95.2)
I95.1
)
postprocedural shock (
ICD-10-CM Diagnosis Code T81.1
Postprocedural shock
Applicable To
- Shock during or resulting from a procedure, not elsewhere classified
Type 1 Excludes
- anaphylactic shock NOS (T78.2)
- anaphylactic shock due to correct substance properly administered (T88.6)
- anaphylactic shock due to serum (T80.5-)
- electric shock (T75.4)
- obstetric shock (O75.1)
- septic shock (R65.21)
- shock due to anesthesia (T88.2)
- shock following abortion or ectopic or molar pregnancy (O00-O07, O08.3)
- traumatic shock (T79.4)
T81.1-
)
psychogenic syncope (
ICD-10-CM Diagnosis Code F48.8
Other specified nonpsychotic mental disorders
Applicable To
- Dhat syndrome
- Neurasthenia
- Occupational neurosis, including writer's cramp
- Psychasthenia
- Psychasthenic neurosis
- Psychogenic syncope
F48.8
)
shock NOS (
ICD-10-CM Diagnosis Code R57.9
Shock, unspecified
Applicable To
- Failure of peripheral circulation NOS
R57.9
)
shock complicating or following abortion or ectopic or molar pregnancy (
ICD-10-CM Diagnosis Code O00
Ectopic pregnancy
Includes
- ruptured ectopic pregnancy
Use Additional
- code from category O08 to identify any associated complication
O00
-
ICD-10-CM Diagnosis Code O07
Failed attempted termination of pregnancy
Includes
- failure of attempted induction of termination of pregnancy
- incomplete elective abortion
Type 1 Excludes
- incomplete spontaneous abortion (O03.0-)
O07
,
ICD-10-CM Diagnosis Code O08.3
Shock following ectopic and molar pregnancy
Applicable To
- Circulatory collapse following ectopic and molar pregnancy
- Shock (postprocedural) following ectopic and molar pregnancy
Type 1 Excludes
- shock due to infection following ectopic and molar pregnancy (O08.82)
O08.3
)
shock complicating or following labor and delivery (
ICD-10-CM Diagnosis Code O75.1
Shock during or following labor and delivery
Applicable To
- Obstetric shock following labor and delivery
O75.1
)
Stokes-Adams attack (
ICD-10-CM Diagnosis Code I45.9
Conduction disorder, unspecified
Applicable To
- Heart block NOS
- Stokes-Adams syndrome
I45.9
)
unconsciousness NOS (
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
R40.2-
)

The following code(s) above R55 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 R55:

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

Approximate Synonyms

Micturition syncope
Micturition syncope (fainting while urinating)
Near syncope
Near syncope (almost fainted)
Syncope
Syncope (fainting), vasovagal
Syncope (loss of consciousness, fainting)
Syncope and collapse (fainting)
Transient loss of consciousness
Vasovagal syncope

Clinical Information

A disorder characterized by spontaneous loss of consciousness caused by insufficient blood supply to the brain.
A spontaneous loss of consciousness caused by insufficient blood supply to the brain.
A spontaneous loss of consciousness caused by insufficient blood to the brain.
A transient loss of consciousness and postural tone caused by diminished blood flow to the brain (i.e., brain ischemia). Presyncope refers to the sensation of lightheadedness and loss of strength that precedes a syncopal event or accompanies an incomplete syncope. (from Adams et al., Principles of Neurology, 6th ed, pp367-9)
Extremely weak; threatened with syncope.
Fainting due to a sudden fall of blood pressure below the level required to maintain oxygenation of brain tissue.
If you've ever fainted, you are not alone - at least one third of people faint sometime in their lives. Fainting is a temporary loss of consciousness. You lose muscle control at the same time, and may fall down. Most people recover quickly and completely. Fainting usually happens when your blood pressure drops suddenly, causing a decrease in blood flow to your brain. This is more common in older people. Some causes of fainting include
- heat or dehydration
- emotional distress
- standing up too quickly
- certain medicines
- drop in blood sugar
- heart problems
fainting is usually nothing to worry about, but it can sometimes be a sign of a serious problem. If you faint, it's important to see your health care provider and find out why it happened.
Loss of consciousness due to a reduction in blood pressure that is associated with an increase in vagal tone and peripheral vasodilation.

ICD-10-CM R55 is grouped within Diagnostic Related Group(s) (MS-DRG v40.0):

312 Syncope and collapse

Convert R55 to ICD-9-CM

Code History

2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
2017 (effective 10/1/2016): No change
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

Code annotations containing back-references to R55:

Code First: R05.4

ICD-10-CM Diagnosis Code R05.4
Cough syncope
Code First
- syncope and collapse (R55)
Type 2 Excludes: R29.2

ICD-10-CM Diagnosis Code R29.2
Abnormal reflex
Type 2 Excludes
- abnormal pupillary reflex (H57.0)
- hyperactive gag reflex (J39.2)
- vasovagal reaction or syncope (R55)

Diagnosis Index entries containing back-references to R55:

Arrhythmia (auricle)(cardiac)(juvenile)(nodal)(reflex)(supraventricular)(transitory)(ventricle) I49.9
ICD-10-CM Diagnosis Code I49.9
Cardiac arrhythmia, unspecified
Applicable To
Arrhythmia (cardiac) NOS
- vagal R55
Attack, attacks
- unconsciousness R55
- drop NEC R55
- syncope R55
- vasomotor R55
- vasovagal R55 (paroxysmal) (idiopathic)
Blackout R55
Collapse R55
- general R55
Drop (in)
- attack NEC R55
Fainting R55 (fit)
Fit R56.9
ICD-10-CM Diagnosis Code R56.9
Unspecified convulsions
Applicable To
Convulsion disorder
Fit NOS
Recurrent convulsions
Seizure(s) (convulsive) NOS
- fainting R55
Gower's
- syndrome R55 (vasovagal attack)
Instability
- vasomotor R55
Loss (of)
- consciousness, transient R55
Near-syncope R55
Phenomenon
- vasomotor R55
- vasovagal R55
Pre-syncope R55
Reflex R29.2
ICD-10-CM Diagnosis Code R29.2
Abnormal reflex
Type 2 Excludes
abnormal pupillary reflex (H57.0)
hyperactive gag reflex (J39.2)
vasovagal reaction or syncope (R55)
- vasovagal R55
Syncope (near) (pre-) R55
- cardiac R55
- heart R55
- vasoconstriction R55
- vasodepressor R55
- vasomotor R55
- vasovagal R55
Syndrome - see also Disease
- Gower's R55
- vasovagal R55
Vasovagal attack (paroxysmal) R55

ICD-10-CM Codes Adjacent To R55

R52 Pain, unspecified

R53 Malaise and fatigue

R53.0 Neoplastic (malignant) related fatigue

R53.1 Weakness

R53.2 Functional quadriplegia

R53.8 Other malaise and fatigue

R53.81 Other malaise

R53.82 Chronic fatigue, unspecified

R53.83 Other fatigue

R54 Age-related physical debility

R55 Syncope and collapse

R56 Convulsions, not elsewhere classified

R56.0 Febrile convulsions

R56.00 Simple febrile convulsions

R56.01 Complex febrile convulsions

R56.1 Post traumatic seizures

R56.9 Unspecified convulsions

R57 Shock, not elsewhere classified

R57.0 Cardiogenic shock

R57.1 Hypovolemic shock

R57.8 Other shock

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 R55

Syncope and collapse

Cardiogenic shock

Carotid sinus syncope

Heat syncope

Other somatoform disorders

Multi-system degeneration of the autonomic nervous system

Orthostatic hypotension

Postprocedural shock

Other specified nonpsychotic mental disorders

Shock, unspecified

Ectopic pregnancy

Failed attempted termination of pregnancy

Shock following ectopic and molar pregnancy

Shock during or following labor and delivery

Conduction disorder, unspecified

Coma

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

Cough syncope

Abnormal reflex

Cardiac arrhythmia, unspecified

Unspecified convulsions

Abnormal reflex