ICD10BillableValid for clinical use
ICD-10 Code I49.1: Atrial premature depolarization
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 Diseases of the circulatory system (I00-I99).
When is it used?
- May be used when a clinician documents atrial premature depolarization 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
9Diseases of the circulatory system (I00-I99)
block
I30-I5AOther forms of heart disease
category
I49Other cardiac arrhythmias
currentI49
Official coding notes
Inclusion terms
- Atrial premature beats
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
CardiologistGeneral Physician
Related codes
I49.0Ventricular fibrillation and fluttercategoryI49.2Junctional premature depolarizationcodeI49.3Ventricular premature depolarizationcodeI49.4Other and unspecified premature depolarizationcategoryI49.5Sick sinus syndromecodeI49.8Other specified cardiac arrhythmiascodeI49.9Cardiac arrhythmia, unspecifiedcode
Sibling codes
I49.0Ventricular fibrillation and flutterI49.2Junctional premature depolarizationbillableI49.3Ventricular premature depolarizationbillableI49.4Other and unspecified premature depolarizationI49.5Sick sinus syndromebillableI49.8Other specified cardiac arrhythmiasbillableI49.9Cardiac arrhythmia, unspecifiedbillable
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
Mapped diagnoses and classifications
SNOMED_CT 251173003high
Atrial bigeminy
Source: SNOMED International ICD-10 map
SNOMED_CT 287057009high
Atrial premature complex
Source: SNOMED International ICD-10 map
SNOMED_CT 1142123003high
Atrial premature depolarisation with aberrant ventricular conduction
Source: SNOMED International ICD-10 map
SNOMED_CT 1142124009high
Atrial premature depolarisation with normal conduction
Source: SNOMED International ICD-10 map
SNOMED_CT 251174009high
Atrial trigeminy
Source: SNOMED International ICD-10 map
SNOMED_CT 251170000high
Blocked premature atrial contraction
Source: SNOMED International ICD-10 map
Coding guidelines
Compatibility
Legacy and official ICD code match exactly.
Legacy codes
I49.1
Common synonyms
Atrial premature depolarization
Frequently asked questions
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.