ICD-10-CM Code R55

Syncope and collapse

Version 2020 Billable Code No Valid Principal Dx Cardiology

Valid for Submission

R55 is a billable code used to specify a medical diagnosis of syncope and collapse. The code is valid for the year 2020 for the submission of HIPAA-covered transactions. The ICD-10-CM code R55 might also be used to specify conditions or terms like anoxic seizure, brief loss of consciousness, collapse, collapse, complex part seizure with impairment of consciousness only, complex partial seizure + impairment consciousness at onset, etc

The code is commonly used in cardiology medical specialties to specify clinical concepts such as syncope and collapse.

According to ICD-10-CM guidelines this code should not to be used as a principal diagnosis code when a related definitive diagnosis has been established.

Short Description:Syncope and collapse
Long Description:Syncope and collapse

Tabular List of Diseases and Injuries

The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with guidance for inclusions, exclusions, descriptions and more. The following references are applicable to the code R55:

Inclusion Terms

Inclusion Terms
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
  • Blackout
  • Fainting
  • Vasovagal attack

Type 1 Excludes

Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • cardiogenic shock R57.0
  • carotid sinus syncope G90.01
  • heat syncope T67.1
  • neurocirculatory asthenia F45.8
  • neurogenic orthostatic hypotension G90.3
  • orthostatic hypotension I95.1
  • postprocedural shock T81.1
  • psychogenic syncope F48.8
  • shock NOS R57.9
  • shock complicating or following abortion or ectopic or molar pregnancy O00 O07 O08.3
  • shock complicating or following labor and delivery O75.1
  • Stokes-Adams attack I45.9
  • unconsciousness NOS R40.2

Index to Diseases and Injuries

The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code R55 are found in the index:


The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Anoxic seizure
  • Brief loss of consciousness
  • Collapse
  • Collapse
  • Complex part seizure with impairment of consciousness only
  • Complex partial seizure + impairment consciousness at onset
  • Convulsive syncope
  • Defecation syncope
  • Deglutition syncope
  • Dissociative neurological symptom disorder co-occurrent with alteration of consciousness
  • Drop attack
  • Drop attacks in middle-aged woman
  • Effects of abnormal gravitational forces AND/OR states
  • Effects of centrifugal force
  • Effort syncope
  • Elderly vasovagal syndrome
  • Hypotensive syncope
  • Hypotensive syncope
  • Incomplete loss of consciousness without amnesia
  • Injury caused by abnormal gravitational state
  • Loss of consciousness
  • Malignant vasovagal syndrome
  • Micturition syncope
  • Moderate loss of consciousness
  • Near syncope
  • O/E - collapse - syncope
  • O/E - collapse -cardiac arrest
  • O/E - collapsed
  • O/E - fit/convulsion
  • O/E - loss of consciousness
  • O/E - psychomotor fit
  • Prolonged loss of consciousness
  • Robin sequence
  • Simple partial onset of seizure with automatisms
  • Simple partial onset seizure followed by impaired consciousness
  • Simple partial seizure followed by impaired consciousness
  • Situational syncope
  • Syncope
  • Syncope and collapse
  • Syncope due to autonomic failure
  • Syncope due to centrifugal force in flying
  • Syncope due to orthostatic hypotension
  • Syncope symptom
  • Vasovagal symptom
  • Vasovagal syncope
  • Vasovagal syncope due to immersion
  • Ventricular extrasystoles with syncope, perodactyly and Robin sequence syndrome
  • Ventricular premature beats
  • Witnessed syncope

Convert R55 to ICD-9

  • 780.2 - Syncope and collapse

Code Classification

  • Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00–R99)
    • General symptoms and signs (R50-R69)
      • Syncope and collapse (R55)

Code History

  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
    (First year ICD-10-CM implemented into the HIPAA code set)
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020

Information for Patients


Fainting is a temporary loss of consciousness. If you're about to faint, you'll feel dizzy, lightheaded, or nauseous. Your field of vision may "white out" or "black out." Your skin may be cold and clammy. You lose muscle control at the same time, and may fall down.

Fainting usually happens when your blood pressure drops suddenly, causing a decrease in blood flow to your brain. It 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

When someone faints, make sure that the airway is clear and check for breathing. The person should stay lying down for 10-15 minutes. Most people recover completely. 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.

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