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ICD-10 Code R55: Syncope and collapse

R55 is a billable ICD-10 diagnosis code used to classify Syncope and collapse in medical records and claims. You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records. ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99).

Reviewed by HealthAssure Clinical TeamUpdated 26 May 2026

What is this code?

ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99).

When is it used?

  • May be used when a clinician documents syncope and collapse in a patient's medical record.
  • May appear in hospital records, claims, referrals, and clinical documentation.
  • This code can be used as a clinically usable diagnosis entry in standardized coding workflows.

What it does not mean

  • A code alone does not explain severity, treatment plan, or outcome.
  • A medical code should not be treated as a substitute for a doctor's diagnosis or advice.

Code hierarchy

chapter
18Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)
block
R50-R69General symptoms and signs
currentR50-R69

Official coding notes

Inclusion terms
  • Blackout
  • Fainting
  • Vasovagal attack
Excludes1 (do not code together)
  • 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-)

Where you may see this code

You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records.

Related specialists

General Physician

Coverage-related procedures and services

CPT 93228high
EXTERNAL MOBILE CARDIOVASCULAR TELEMETRY WITH ELECTROCARDIOGRAPHIC RECORDING, CONCURRENT COMPUTERIZED REAL TIME DATA ANALYSIS AND GREATER THAN 24 HOURS OF ACCESSIBLE ECG DATA STORAGE (RETRIEVABLE WITH QUERY) WITH ECG TRIGGERED AND PATIENT SELECTED EVENTS TRANSMITTED TO A REMOTE ATTENDED SURVEILLANCE CENTER FOR UP TO 30 DAYS; REVIEW AND INTERPRETATION WITH REPORT BY A PHYSICIAN OR OTHER QUALIFIED HEALTH CARE PROFESSIONAL
Source: CMS coverage guidance
CPT 93229high
EXTERNAL MOBILE CARDIOVASCULAR TELEMETRY WITH ELECTROCARDIOGRAPHIC RECORDING, CONCURRENT COMPUTERIZED REAL TIME DATA ANALYSIS AND GREATER THAN 24 HOURS OF ACCESSIBLE ECG DATA STORAGE (RETRIEVABLE WITH QUERY) WITH ECG TRIGGERED AND PATIENT SELECTED EVENTS TRANSMITTED TO A REMOTE ATTENDED SURVEILLANCE CENTER FOR UP TO 30 DAYS; TECHNICAL SUPPORT FOR CONNECTION AND PATIENT INSTRUCTIONS FOR USE, ATTENDED SURVEILLANCE, ANALYSIS AND TRANSMISSION OF DAILY AND EMERGENT DATA REPORTS AS PRESCRIBED BY A PHYSICIAN OR OTHER QUALIFIED HEALTH CARE PROFESSIONAL
Source: CMS coverage guidance
CPT 93268high
EXTERNAL PATIENT AND, WHEN PERFORMED, AUTO ACTIVATED ELECTROCARDIOGRAPHIC RHYTHM DERIVED EVENT RECORDING WITH SYMPTOM-RELATED MEMORY LOOP WITH REMOTE DOWNLOAD CAPABILITY UP TO 30 DAYS, 24-HOUR ATTENDED MONITORING; INCLUDES TRANSMISSION, REVIEW AND INTERPRETATION BY A PHYSICIAN OR OTHER QUALIFIED HEALTH CARE PROFESSIONAL
Source: CMS coverage guidance
CPT 93270high
EXTERNAL PATIENT AND, WHEN PERFORMED, AUTO ACTIVATED ELECTROCARDIOGRAPHIC RHYTHM DERIVED EVENT RECORDING WITH SYMPTOM-RELATED MEMORY LOOP WITH REMOTE DOWNLOAD CAPABILITY UP TO 30 DAYS, 24-HOUR ATTENDED MONITORING; RECORDING (INCLUDES CONNECTION, RECORDING, AND DISCONNECTION)
Source: CMS coverage guidance
CPT 93272high
EXTERNAL PATIENT AND, WHEN PERFORMED, AUTO ACTIVATED ELECTROCARDIOGRAPHIC RHYTHM DERIVED EVENT RECORDING WITH SYMPTOM-RELATED MEMORY LOOP WITH REMOTE DOWNLOAD CAPABILITY UP TO 30 DAYS, 24-HOUR ATTENDED MONITORING; REVIEW AND INTERPRETATION BY A PHYSICIAN OR OTHER QUALIFIED HEALTH CARE PROFESSIONAL
Source: CMS coverage guidance
CPT 93271high
EXTERNAL PATIENT AND, WHEN PERFORMED, AUTO ACTIVATED ELECTROCARDIOGRAPHIC RHYTHM DERIVED EVENT RECORDING WITH SYMPTOM-RELATED MEMORY LOOP WITH REMOTE DOWNLOAD CAPABILITY UP TO 30 DAYS, 24-HOUR ATTENDED MONITORING; TRANSMISSION AND ANALYSIS
Source: CMS coverage guidance

Coding guidelines

Compatibility

Legacy and official ICD code match exactly.
Legacy codes
R55

Common synonyms

Syncope and collapse

Frequently asked questions

Code details

CodeR55
SystemICD10
Display nameSyncope and collapse
ChapterSymptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)
BlockGeneral symptoms and signs

Flags

BillableYes
Valid clinical useYes

Source

SourceICD-10
Version2026-annual
Releaseannual
Year2026

Index terms

Matched terms
Arrhythmia(auricle)(cardiac)(juvenile)(nodal)(reflex)(supraventricular)(transitory)(ventricle)Attack, attacksAttack, attacksAttack, attacksAttack, attacksAttack, attacksBlackoutCollapseCollapseDrop(in)Fainting(fit)Fit

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.

ICD-10 Code R55 for Syncope and collapse | HealthAssure