ICD-10 Guide

Open Heart Surgery

ICD-10 Coding for Open Heart Surgery(021009Z, 02RF08Z)

PRIMARY SPECIALTYCardiothoracic Surgery

COMPLEXITYHigh

LAST UPDATED09/15/2025

Sam Tuffun, PT, DPT

Physical Therapist | Medical Coding & Billing Contributor

Diagnosis Overview

What is Open Heart Surgery?

Essential facts and insights about Open Heart Surgery

Key Clinical Considerations:

Chest pain or discomfort
Shortness of breath
Fatigue or weakness
Diagnostic tests: ECG, echocardiogram, coronary angiography
Physical exam findings: abnormal heart sounds, elevated blood pressure

Clinical Information

Clinical Criteria & Documentation Requirements

Patient history and physical examination
Indications for surgery
Preoperative and postoperative care details
Specific coding terminology: CABG, valve replacement
Documentation examples: operative reports, consent forms

Coding Guidelines

Usage Guidelines & Examples

Usage guidelines: Ensure codes reflect the specific procedure performed.
Common errors: Misclassifying the type of surgery or omitting postoperative complications.

Code Exclusions

Important Exclusions

Excluded conditions: Congenital heart defects not requiring surgery.
Alternative codes: Codes for minimally invasive cardiac procedures.

Specialty Focus

Primary Specialty

Cardiothoracic Surgery

Specialty Applications

Patient populations: Adults with coronary artery disease, valvular heart disease.
Clinical settings: Hospitals, surgical centers specializing in cardiothoracic surgery.

Coding Complexity

High Complexity

This diagnosis requires careful attention to:

Comprehensive clinical documentation
Accurate code selection based on clinical criteria
Proper exclusion considerations
Specialty-specific coding guidelines

Documentation

Documentation Templates

Billing Information

Billing Considerations

Ensure proper documentation for billing
Verify code specificity requirements
Check for any additional codes needed
Review payer-specific guidelines

Common Issues

Insufficient clinical documentation
Incorrect code selection
Missing supporting diagnoses
Timing and frequency documentation

Frequently Asked Questions

Documentation requirements?

Comprehensive patient history, surgical indications, and detailed operative notes are required.

Billing considerations?

Ensure correct coding of procedures and diagnoses; verify insurance coverage for open heart surgery.

Open Heart Surgery

Diagnosis Overview

Key Clinical Considerations:

Clinical Information

Clinical Criteria & Documentation Requirements

Coding Guidelines

Usage Guidelines & Examples

Code Exclusions

Important Exclusions

Related ICD-10 Codes

Related CPT Codes

Specialty Focus

Primary Specialty

Specialty Applications

Coding Complexity

Documentation

Documentation Templates

Billing Information

Billing Considerations

Common Issues

Frequently Asked Questions

Documentation requirements?

Billing considerations?

Open Heart Surgery

Diagnosis Overview

Key Clinical Considerations:

Clinical Information

Clinical Criteria & Documentation Requirements

Coding Guidelines

Usage Guidelines & Examples

Code Exclusions

Important Exclusions

Related ICD-10 Codes

Related CPT Codes

Specialty Focus

Primary Specialty

Specialty Applications

Coding Complexity

Documentation

Documentation Templates

Billing Information

Billing Considerations

Common Issues

Frequently Asked Questions

Documentation requirements?

Billing considerations?