R94.31

Billable

Abnormal electrocardiogram [ECG] [EKG]

Status

Billable / Specific

Chapter

18: Symptoms, Signs and Abnormal Clinical and Laboratory Findings

Block

R90-R94

Parent Code

R94.3

Coding Notes

Includes

Conditions included under this code

nonspecific abnormal findings on diagnostic imaging by computerized axial tomography [CAT scan]
nonspecific abnormal findings on diagnostic imaging by magnetic resonance imaging [MRI][NMR]
nonspecific abnormal findings on diagnostic imaging by positron emission tomography [PET scan]
nonspecific abnormal findings on diagnostic imaging by thermography
nonspecific abnormal findings on diagnostic imaging by ultrasound [echogram]
nonspecific abnormal findings on diagnostic imaging by X-ray examination
abnormal results of radionuclide [radioisotope] uptake studies
abnormal results of scintigraphy

Excludes 1

Codes that cannot be used together with this code (mutual exclusion)

•abnormal findings on antenatal screening of motherO28
diagnostic abnormal findings classified elsewhere - see Alphabetical Index
•long QT syndromeI45.81

Excludes 2

Conditions not included here, but the patient may have both

•abnormal findings on antenatal screening of motherO28
•certain conditions originating in the perinatal periodP04-P96
signs and symptoms classified in the body system chapters
•signs and symptoms of breast,N63, N64.5

Related Codes(2)

R94.30

Abnormal result of cardiovascular function study, unsp

Billable R94.39

Abnormal result of other cardiovascular function study

Billable

Also Known As / Clinical Terms(775)

SNOMED CT

UMLS

Abnormal electrocardiogram [ECG] [EKG]C2830610

Clinical Terms

PR interval - finding
Wellens syndrome
Myocardial hypertrophy, determined by electrocardiogram
Diffuse ST segment depression
Finding of ECG P wave axis
Electrocardiographic asystole
ECG: asystole
EKG: QRS complex abnormal
Paired ventricular premature complexes on electrocardiogram (EKG)
ECG:left ventricle hypertrophy
QRS complex height increased
Prolonged PR interval
Electrocardiographic right bundle branch block
ST segment depression
ECG: supraventricular arrhythmia
Finding of electrocardiogram F wave
Borderline abnormal ECG
QT interval - finding
ECG artefacts
Hypertrophy of cardiac atrium, determined by electrocardiogram
Ventricular hypertrophy by EKG
Paired ventricular premature complexes on electrocardiogram
Tall tented T wave
EKG:posterior/inferior infarct
Electrical alternation of heart
Counterclockwise vectorcardiographic loop
Electrocardiographic focal atrial tachycardia
Shortened TU interval
Electrocardiographic atrial ectopics
Shortened PR interval
ECG: left bundle branch block
EKG: junctional escape rhythm
Shortened T wave
Deep symmetric anterior T wave inversion
P wave left axis deviation
T wave inversion in EKG
Narrow QRS complex
P wave right axis deviation
EKG: multifocal atrial tachycardia
Posterior myocardial infarction on electrocardiogram
EKG: heart block
Hypertrophy of cardiac ventricle, determined by electrocardiogram
EKG: ventricular fibrillation
Finding of ECG QRS Axis
Electrocardiographic Q wave abnormal
ECG: U wave exaggerated
Tall P wave
Clockwise cardiac rotation
EKG: U wave abnormal
Inverted U wave
Right atrial hypertrophy by EKG
Electrocardiographic supraventricular arrhythmia
ECG: idioventricular rhythm
Left ventricular hypertrophy by EKG
Q wave - finding
ECG: S-T interval abnormal
Diminished left ventricle forces by electrocardiogram
Electrocardiographic myocardial ischemia
EKG: ventricular tachycardia
Finding of electrocardiogram P wave axis
Atrial hypertrophy by EKG
ECG: anteroseptal infarction
Observation of TU interval
Shortened ST segment
ECG: Left ventricular hypertrophy
Ambulatory electrocardiogram abnormal
Nonspecific ST-T abnormality on electrocardiogram
Electrocardiographic posterior/inferior infarct
Left axis deviation greater than -90 degrees by EKG
Right axis deviation
Electrocardiographic left bundle branch block
High T-voltage
Finding of ECG T wave duration
TU elevation
ECG:posterior/inferior infarct
Finding of TU interval
ECG: ventricular tachycardia polymorphic
Prolonged P-R interval
Electrocardiogram artifact
Electrocardiogram: extrasystole
EKG:left ventricle hypertrophy
ECG: LVH
Electrical alternans
Type B Wolff-Parkinson-White pattern
ECG: ST interval abnormal
ECG: ventricular fibrillation
ECG: P-R interval abnormal
Quinidine toxicity by EKG
Electrocardiographic left ventricular strain
Decreased EKG voltage
ECG: junctional rhythm
QRS complex height decreased
Finding of electrocardiogram PR interval
ST segment elevation
Left ventricular hypertrophy by electrocardiogram
RAD - Right axis deviation
Diminished LV forces by EKG
rSr pattern in V1 and V2
ECG: extrasystole
Electrocardiographic P wave abnormal
Electrocardiographic R wave abnormal
ECG: R wave abnormal
ECG artifact
Provoked Brugada electrocardiograph pattern
Electrocardiographic ventricular tachycardia monomorphic
ECG: accelerated junctional rhythm
Electrocardiogram: idioventricular rhythm
ECG: sinus arrhythmia
Inferior ST segment depression
Anticlockwise cardiac rotation
Shortened ST interval
EKG: T wave abnormal
Anterior and lateral ST segment elevation
Prolonged P wave
Bifid U wave
Anterolateral infarction by EKG
Anteroseptal infarction on electrocardiogram
Electrocardiogram: junctional tachycardia
Borderline abnormal electrocardiogram
ECG: right ventricle hypertrophy
Left axis deviation
Electrocardiogram finding of infarction
Quinidine toxicity by electrocardiogram
EKG: P-R interval abnormal
Wellens' syndrome variant
Low U wave
Electrocardiographic ventricular tachycardia polymorphic
Electrocardiographic atrial fibrillation
EKG: P wave abnormal
S wave - finding
Electrocardiogram: sinus arrhythmia
ECG: U wave abnormal
P mitrale by electrocardiogram
ECG: lateral infarction
ECG: T wave abnormal
ECG: junctional escape rhythm
P wave - finding
Shortened QT interval
Ambulatory ECG abnormal
Q wave height decreased
Low QRS voltages in the limb leads
Finding of ECG PR interval
Digitalis toxicity by electrocardiogram
ECG: S wave abnormal
EKG axis perpendicular to frontal plane
Anterior myocardial infarction on electrocardiogram (EKG)
Abnormal EKG finding
ECG: junctional tachycardia
EKG: R wave abnormal
Electrocardiographic S wave abnormal
Wellens' variant T wave
Right atrial hypertrophy by electrocardiogram
Atrioventricular conduction pattern - finding
Flattened P wave
Electrocardiogram: partial atrioventricular block - 2:1
Flattened U wave
ECG: ectopic beats - premature atrial contraction
Electrocardiogram: sinus bradycardia
EKG hypertrophy
Finding of electrocardiogram QRS Axis
QRS complex - finding
Secondary ST-T abnormality on electrocardiogram
Inferior infarction by EKG
Shortened U wave
Electrocardiogram: F wave absent
Flattened T wave
Electrocardiographic atrial tachycardia
ECG: partial sinoatrial block
EKG: atrial tachycardia
Inverted P wave
Diminished right ventricle forces by electrocardiogram
Inferior and right sided ST segment elevation
Lateral infarction on electrocardiogram
Electrocardiographic myocardial infarction
ECG: ventricular ectopics
EKG: Q wave abnormal
Finding of electrocardiogram T wave duration
ECG: partial atrioventricular block - long PR
ECG: sinus bradycardia
EKG: S wave abnormal
Counterclockwise cardiac rotation
Decreased electrocardiogram voltage
R wave height increased
Ventricular inversion electrocardiogram pattern
ECG: atrial extrasystoles
ECG: ventricular arrhythmia
Diminished RV forces by EKG
Prolonged T wave
Electrocardiogram: junctional rhythm
Posterior infarction by EKG
EKG ventricular tachycardia polymorphic
Electrocardiogram: partial atrioventricular block - long PR
Finding of cardiac conduction pattern
P pulmonale by EKG
Electrocardiographic junctional escape rhythm
Right ventricular S-T changes
S wave height increased
EKG: atrial flutter
ECG: myocardial infarction
EKG: myocardial infarction
Prolonged QRS complex
ST depression
Sloping PR interval
Electrocardiographic ventricular fibrillation
Anterior myocardial infarction on electrocardiogram
Electrocardiogram artefact
Tall T wave
ECG - electrocardiogram atrial premature beats
Anterior ST segment elevation
Anterolateral infarction by electrocardiogram
Deep S wave
ECG ST segment changes
ECG: focal atrial tachycardia
Bifid T wave
Finding of electrocardiogram QRS complex
Electrocardiographic T wave abnormal
Prolonged TU interval
Inferior ST segment elevation
Electrocardiogram: Q-T interval abnormal
ECG: antero-septal infarct
Electrocardiogram: sinus rhythm
T wave alternans on electrocardiogram
Prolonged U wave
Right ventricular ST changes
ECG: torsades de pointes
Prolonged ST segment
Electrocardiographic U wave abnormal
Decreased QT interval
Pathological Q wave
EKG: right ventricle hypertrophy
ECG: P wave abnormal
R wave - finding
EKG ST segment changes
Inadequate electrocardiogram tracing
TU depression
ECG: LBBB - left bundle branch block
EKG: asystole
EKG: accelerated junctional rhythm
Finding of electrocardiogram P wave
Electrocardiogram: premature ventricular contractions
Low ventricular voltage by EKG
Type A Wolff-Parkinson-White pattern
ECG: ectopic beats - unifocal premature ventricular contractions
PR elevation
Brugada electrocardiograph pattern
P pulmonale by electrocardiogram
Electrocardiogram: U wave exaggerated
Inverted T wave
EKG: ventricular arrhythmia
Right bundle branch block (RBBB) on electrocardiogram
ECG: atrial fibrillation
Bifid P wave
ECG: ectopic beats with multifocal premature ventricular contractions
Posterior ST segment depression
Electrocardiogram: partial atrioventricular block - 3:1
ECG myocardial ischaemia
ECG: sinus rhythm
T wave duration - finding
EKG ventricular tachycardia monomorphic
Finding of ECG voltage
Anterior T wave inversion
Posterior ST segment elevation
P mitrale by EKG
Reverse tick ST segment
ECG: RVH - right ventricle hypertrophy
Electrocardiogram: ectopic beats with multifocal premature ventricular contractions
Electrocardiogram: partial sinoatrial block
ECG: premature atrial contractions
Inverted biphasic anterior T wave
ECG: Q-T interval abnormal
ECG: bradycardia
ECG: QRS complex abnormal
Electrocardiographic P-R interval abnormal
Electrocardiographic heart block
EKG: left bundle branch block
Digitalis toxicity by EKG
Low QRS voltages
ECG: pulseless electrical activity
ECG: supraventricular tachycardia
Electrocardiographic QRS complex abnormal
Electrocardiographic supraventricular tachycardia
Finding of electrocardiogram R wave
Cardiac pacemaker active on ECG (electrocardiogram)
ECG: ventricular tachycardia, polymorphic with long QT interval
P wave axis superior
ECG: atrial ectopics
EKG: atrial ectopics
ECG: sinus tachycardia
ECG: partial atrioventricular block - 3:1
Tall R wave
Electrocardiogram: sinus tachycardia
Tall U wave
Electrocardiogram: lateral infarction
EKG myocardial ischemia
ECG: paced rhythm
ECG: atrial flutter
Hypertrophy of left cardiac atrium, determined by electrocardiogram
ECG: heart block
S-T changes
Finding of electrocardiogram QT interval
Nonspecific ST-T abnormality
Superior axis
ECG voltage - finding
Electrocardiogram: ventricular ectopics
ECG: F wave absent
ECG: right bundle branch block
Electrocardiographic ST interval abnormal
Electrocardiogram showing paced rhythm with electrical capture
ECG: atrial tachycardia
Low QRS voltages in the precordial leads
P mitrale
Electrocardiographic myocardial ischaemia
ECG: PVCs - Premature ventricular complexes
Electrocardiographic right ventricular hypertrophy
ECG: premature ventricular contractions
Electrocardiogram: paroxysmal atrial tachycardia
ECG: ventricular tachycardia
ECG: partial atrioventricular block - 2:1
Ventricular escape rhythm on electrocardiogram
Electrocardiogram: ectopic beats with unifocal premature ventricular contractions
ECG: multifocal atrial tachycardia
Shortened P wave
ECG: paroxysmal ventricular tachycardia
Finding of atrioventricular conduction pattern
ECG: atrial premature complexes
LAD - Left axis deviation
Septal infarction by electrocardiogram
Left axis deviation greater than -90 degrees by electrocardiogram
EKG: supraventricular arrhythmia
Sloping ST segment
Electrocardiogram: ectopic beats
Left ventricular ST changes
Electrocardiogram abnormal
Septal infarction by EKG
Electrocardiogram: pulseless electrical activity
Left ventricular S-T changes
S wave height decreased
Q wave height increased
Left atrial hypertrophy by EKG
ECG: left ventricular strain
Low ventricular voltage by electrocardiogram
Ventricular escape rhythm on electrocardiogram (EKG)
R wave height decreased
P wave axis - finding
Finding of electrocardiogram voltage
EKG: focal atrial tachycardia
Electrocardiographic ventricular arrhythmia
Wide QRS complex
PR depression
Electrocardiographic axis perpendicular to frontal plane
Flat U wave
Electrocardiogram: ectopic beats with premature atrial contraction
EKG: torsades de pointes
Anterior ST segment depression
Electrocardiographic ST segment changes
Inferior and lateral ST segment elevation
EKG: left ventricular strain
Electrocardiographic atrial flutter
ECG: Q wave abnormal
Electrocardiogram: bradycardia
Electrocardiographic torsades de pointes
Abnormal ECG
Finding of electrocardiogram Q wave
P pulmonale
Inadequate ECG tracing
Electrocardiographic ventricular tachycardia
Cardiac pacemaker active on electrocardiogram
Finding of electrocardiogram S wave
QRS Axis - finding
Lateral ST segment elevation
Electrocardiogram showing electrical capture following temporary pacing
Electrocardiographic accelerated junctional rhythm
ECG ventricular tachycardia monomorphic
Electrocardiogram: paced rhythm
ECG: paroxysmal atrial tachycardia
Inferior myocardial infarction on electrocardiogram
Electrocardiographic multifocal atrial tachycardia
Shortened QRS complex
ECG: F wave - finding
Cardiac conduction pattern - finding
ECG: ectopic beats
Electrocardiographic left ventricle hypertrophy
EKG: supraventricular tachycardia
EKG: right bundle branch block
Electrocardiogram: anteroseptal infarction
QRS complex dropped
Electrocardiogram: paroxysmal ventricular tachycardia

Frequently Asked Questions

What is the ICD-10 code for abnormal electrocardiogram [ecg] [ekg]?

The ICD-10-CM code for abnormal electrocardiogram [ecg] [ekg] is R94.31. The full clinical description is "Abnormal electrocardiogram [ECG] [EKG]". R94.31 is a billable/specific code that can be used on insurance claims and medical billing.

What does ICD-10 code R94.31 mean?

ICD-10-CM code R94.31 represents “Abnormal electrocardiogram [ECG] [EKG]”. It is classified under Chapter 18: Symptoms, Signs and Abnormal Clinical and Laboratory Findings and is a billable/specific code that can be used on a claim.

Is R94.31 a billable code?

Yes, R94.31 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.

What chapter is R94.31 in?

R94.31 is in Chapter 18: Symptoms, Signs and Abnormal Clinical and Laboratory Findings (codes R00-R99).

What codes cannot be used with R94.31?

R94.31 has Excludes1 notes indicating codes that cannot be used together with it, including: abnormal findings on antenatal screening of mother (O28.-); diagnostic abnormal findings classified elsewhere - see Alphabetical Index; long QT syndrome (I45.81).

What SNOMED CT codes does R94.31 map to?

R94.31 maps to 201 SNOMED CT concepts: 102594003, 164852001, 705011000, 705008001, 704999008, and 196 more. SNOMED CT is a clinical terminology used in electronic health records.

What are the UMLS CUIs for R94.31?

R94.31 is linked to 1 UMLS Concept Unique Identifier: C2830610. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.

How does R94.31 relate to ICF functioning codes?

ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like abnormal electrocardiogram [ecg] [ekg] affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.

What is the ICD-11 equivalent of R94.31?

There is no direct ICD-11 mapping available for R94.31 in the WHO crosswalk tables. This may mean the concept is classified differently in ICD-11. Use the ICD-10 to ICD-11 converter to search for related codes.

Automate ICD-10 Coding With AI

Send clinical text to the AutoICD API and get back structured ICD-10 codes with confidence scores. Integrates into any EHR or billing system in minutes.

Try Free View API Docs

Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.