Updated on: July 30, 2025
Dyspnea on exertion (DOE)—shortness of breath that occurs during physical activity—is a common yet complex clinical symptom seen across cardiopulmonary, hematologic, and deconditioning conditions. Whether it’s a subtle sign of early heart failure or an expected result of anemia, accurately capturing this symptom in documentation and coding is vital for risk assessment, diagnosis, and reimbursement.
In this guide, we’ll cover:
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What dyspnea on exertion means clinically
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Common differential diagnoses
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Accurate ICD-10 coding using R06.02
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Sample documentation best practices
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How DocScrib supports real-time, symptom-specific documentation
What is Dyspnea on Exertion?
Dyspnea on exertion refers to a subjective sensation of shortness of breath or difficulty breathing during physical activity. It ranges from mild (with climbing stairs) to severe (during minimal effort like walking across a room).
While DOE can be part of normal aging or deconditioning, it often signals underlying disease in the cardiovascular, pulmonary, or metabolic systems.
Common Causes of Dyspnea on Exertion
Identifying the etiology of DOE is essential because it often precedes more serious symptoms like orthopnea, paroxysmal nocturnal dyspnea, or resting dyspnea.
Key Differential Diagnoses
Category | Common Conditions |
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Cardiac | Heart failure, ischemic heart disease, valvular disease |
Pulmonary | COPD, asthma, ILD, pulmonary embolism |
Hematologic | Anemia, sickle cell disease |
Neuromuscular | Myasthenia gravis, muscular dystrophy |
Deconditioning | Post-ICU syndrome, prolonged inactivity |
Psychiatric | Panic disorder, anxiety-related dyspnea |
ICD-10 Coding for Dyspnea on Exertion
Primary Code
R06.02 – Shortness of breath on exertion
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Use this code when DOE is documented as a symptom and no definitive diagnosis is yet established.
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It reflects the functional limitation and helps capture patient complexity in the EHR.
Related ICD-10 Codes
ICD-10 Code | Description |
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R06.00 | Dyspnea, unspecified |
R06.02 | Dyspnea on exertion (primary keyword) |
I50.9 | Heart failure, unspecified |
J44.9 | COPD, unspecified |
D64.9 | Anemia, unspecified |
Z99.81 | Dependence on supplemental oxygen |
📌 If the cause is determined later (e.g., heart failure), include both R06.02 and the diagnosis code (I50.9) for full clarity.
Sample Clinical Note with DOE
Subjective:
“Patient reports shortness of breath after walking one block or climbing stairs. Onset began two months ago. No chest pain, orthopnea, or recent illness.”
Objective:
Vitals stable. O2 sat: 97% on RA. Lungs clear. Mild lower extremity edema. CBC: Hgb 10.2 g/dL.
Assessment:
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Dyspnea on exertion (R06.02)
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Likely multifactorial – anemia and possible early CHF
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Will pursue echocardiogram and iron studies
Plan:
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Order TTE
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Iron panel, ferritin
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Start iron supplementation
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Follow up in 2 weeks
When to Code for DOE
Use R06.02 when:
✅ The patient’s shortness of breath is exertion-related
✅ There is no definitive diagnosis yet, or the symptom is part of the presentation
✅ You want to highlight functional impact in chronic disease
Do not use R06.02 alone when:
❌ The patient only has resting dyspnea (use R06.00)
❌ The symptom is better explained by a definitive diagnosis (e.g., J44.9) unless you’re capturing both
Importance of Documenting DOE in Detail
Capturing the specific context of dyspnea helps:
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Guide diagnostic workup
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Support medical necessity for testing (e.g., echocardiogram, CT chest)
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Justify specialist referrals
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Reflect disease severity for risk adjustment (e.g., COPD GOLD stage, NYHA class)
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Optimize billing and claims accuracy
Key Elements to Document
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Onset and duration (e.g., “DOE for past 6 months”)
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Activity level that provokes dyspnea (stairs, walking, chores)
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Associated symptoms (chest pain, cough, wheezing)
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Functional limitations (e.g., impact on ADLs)
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Vitals and O2 saturation
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Imaging/lab results that relate to etiology
Charting Challenges with Dyspnea on Exertion
Even though DOE is common, documentation often falls short due to:
🚫 Vague terms like “SOB with movement”
🚫 Missing the trigger level (e.g., mild vs severe exertion)
🚫 Omitting impact on lifestyle or oxygen needs
🚫 Failing to update when symptom resolves or worsens
These issues can cause coding discrepancies, claim rejections, and incomplete clinical profiles.
How DocScrib Enhances Symptom-Based Documentation
DocScrib is designed to capture nuanced symptoms like DOE during the clinical encounter using AI-powered medical scribe technology.
DocScrib Can:
✅ Auto-detect symptoms like dyspnea on exertion in voice or text
✅ Suggest ICD-10 R06.02 and related codes like I50.9 or J44.9
✅ Generate structured SOAP notes for pulmonary, cardiology, and internal medicine visits
✅ Pre-fill oxygen status, activity limitations, and diagnostic workups
✅ Reduce time spent charting by 70%—with full provider control and review
Tired of redundant symptom charting? Let DocScrib take it from here.
👉 Book your free personalized demo today
Quick Reference Chart: ICD-10 Coding for DOE-Related Diagnoses
Clinical Scenario | ICD-10 Code(s) |
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DOE as isolated symptom | R06.02 |
DOE due to anemia | R06.02 + D64.9 |
DOE with heart failure | R06.02 + I50.9 |
DOE in COPD | R06.02 + J44.9 |
Patient on home oxygen with DOE | R06.02 + Z99.81 |
DOE + abnormal EKG under evaluation | R06.02 + R94.31 |
FAQs
Q1: Can R06.02 be used as a primary diagnosis?
Yes, when the patient’s main complaint is exertional dyspnea and no specific diagnosis has yet been confirmed.
Q2: Should I keep using R06.02 after a heart failure diagnosis is made?
You may use both R06.02 and I50.9 if you’re actively managing both the symptom and the underlying cause.
Q3: Can DocScrib capture functional limitations automatically?
Yes! DocScrib listens during the encounter and records activity triggers, oxygen needs, and lifestyle impact, then structures it in your preferred template.
Q4: Is dyspnea on exertion a red flag?
It can be—especially if progressive, associated with chest discomfort, or occurring with minimal effort. Always evaluate thoroughly.
Q5: How often should DOE be updated in the chart?
Reassess at every visit. If symptoms worsen, persist, or resolve, the problem list and codes should reflect the change.
Conclusion
Dyspnea on exertion is often the first sign of something deeper—whether it’s early heart failure, anemia, or deconditioning. Accurate documentation and appropriate use of ICD-10 R06.02 ensures patients receive timely care, and providers are aligned with audit and billing standards.
With DocScrib, capturing this symptom is faster, easier, and more reliable—letting clinicians focus on solving the underlying issue, not formatting notes.
👉 Book your free demo today and streamline your pulmonary and cardiology workflows with intelligent documentation.