DocScrib
How it WorksPricingBlog
Sign InSign UpBook a Demo
DocScrib

AI-powered medical documentation platform streamlining healthcare workflows through intelligent transcription and clinical note generation.

Book a Demo

Product

  • Medical Templates
  • Pricing
  • Integrations
  • Security & Compliance

Resources

  • Blog
  • Documentation
  • Case Studies

Contact

  • support@docscrib.com
  • +1 (555) 123-4567
  • 123 Healthcare Blvd
    Medical District, CA 90210
© 2025 DocScrib. All rights reserved.
Privacy PolicyTerms of ServiceCookie Policy
Home/Diagnosis/ICD-10 Coding for QT Prolongation

ICD-10 Coding for QT Prolongation

I45.81
R94.31

Complete ICD-10-CM coding and documentation guide for icd-10 coding for qt prolongation includes clinical validation requirements, medical necessity guidelines, and coding policies.

Also Known as:
Long QT Syndrome
LQTS
Prolonged QT Interval
Join 10,000+ Happy Clinicians

The AI Medical Scribe for Happiest Clinicians

Save 2+ hours daily with instant clinical documentation.
Our AI scribe listens, understands, and generates comprehensive medical notes so you can focus on patient care.

Start Free Trial
No credit card required•HIPAA compliant
Recording Controls
Start recording to see live transcription
Live Conversation - Try For Free!
Real-time transcription with automatic speaker identification

Ready to Record

Start recording to see live conversation transcription

Key Information: ICD-10 Coding for QT Prolongation

Essential facts and insights about ICD-10 Coding for QT Prolongation

Use ICD-10 code I45.81 for long qt syndrome, ensuring proper documentation in clinical notes.

Primary ICD-10-CM Codes

Long QT syndrome

Billable Code
I45.81
Billable

Diagnostic Criteria

clinical:
  • • QTc ≥480 ms without symptoms
  • • QTc ≥460 ms with symptoms
documentation:
  • • Genetic confirmation of LQTS

Applicable To

  • • Congenital long QT syndrome
  • • Acquired long QT syndrome

Important Notes

  • • Ensure documentation includes QTc measurement method and any associated symptoms.

Abnormal electrocardiogram [ECG] - QT interval prolongation

Billable Code
R94.31
Billable

Diagnostic Criteria

clinical:
  • • QTc measurement showing prolongation without meeting LQTS criteria

Applicable To

  • • Incidental QT prolongation

Important Notes

  • • Document the QTc value and any relevant clinical context.
Ancillary Codes

Additional codes that may be used with this diagnosis

R94.31

Abnormal electrocardiogram [ECG] - QT interval prolongation

Use as an ancillary code for incidental findings or when monitoring QT interval.

Frequently Asked Questions

What is the ICD-10 code for QT prolongation?

The ICD-10 code for confirmed Long QT Syndrome is I45.81, while R94.31 is used for incidental QT prolongation findings.

When should I use R94.31 instead of I45.81?

Use R94.31 for incidental findings of QT prolongation without a confirmed diagnosis of Long QT Syndrome.

Quick Navigation
All DiagnosesICD-10 Codes

Related Resources

How Medical Coding WorksBrowse All Codes