What is the ICD-10 code for an enlarged heart?

The ICD-10 code for an enlarged heart, or cardiomegaly, is I51.7. If the condition is due to hypertension, use I11.9 followed by I51.7.

Can cardiomegaly be a primary diagnosis?

Cardiomegaly can be a primary diagnosis if no underlying cause is documented. Otherwise, code the underlying condition first.

ICD-10 Coding for Enlarged Heart(I51.7, I11.0, I11.9)

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Learn about ICD-10 coding for an enlarged heart, including primary and secondary codes, documentation requirements, and common coding pitfalls.

Also known as:

CardiomegalyHeart Enlargement

Related ICD-10 Code Ranges

Complete code families applicable to Enlarged Heart

I00-I99Primary Range

Diseases of the circulatory system

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Code Comparison: When to Use Each Code

Compare key differences between these codes to ensure accurate selection

Code	Description	When to Use	Key Documentation
I51.7	Cardiomegaly	Use when heart enlargement is documented without a specified cause.	Echocardiogram showing heart enlargement Chest X-ray with cardiothoracic ratio >0.5
I11.9	Hypertensive heart disease without heart failure	Use when cardiomegaly is due to hypertension without heart failure.	Blood pressure >140/90 mmHg Echocardiogram showing left ventricular hypertrophy

Primary ICD-10-CM Codes

Cardiomegaly

I51.7Billable

Differential Codes

Alternative codes to consider when ruling out similar conditions

Dilated cardiomyopathyI42.0

Use when echocardiogram shows dilated chambers.

Hypertensive heart disease with heart failureI11.0

Use when heart failure is present.

Documentation & Coding Risks

Avoid these common issues when documenting Enlarged Heart.

Failure to document hypertension as the cause of cardiomegaly.

Impact

Clinical: Inaccurate diagnosis of the underlying condition., Regulatory: Potential audit issues due to incomplete documentation., Financial: Loss of reimbursement opportunities linked to hypertensive heart disease.

Mitigation

Ensure hypertension is documented in the patient's history., Link cardiomegaly to hypertension in clinical notes.

Using I51.7 alone when hypertension is present.

Impact

Reimbursement: May lead to lower reimbursement due to missing HCC codes., Compliance: Non-compliance with coding guidelines for hypertensive heart disease., Data Quality: Inaccurate representation of patient's condition.

Mitigation

Code I11.9 first, followed by I51.7.

Hypertensive heart disease coding

Impact

Risk of audits due to improper sequencing of codes.

Mitigation

Ensure I11.9 is coded before I51.7 when hypertension is present.

Frequently Asked Questions

Documentation requirements, coding pitfalls and FAQs for conditions coded with I51.7.

Primary Code

I51.7

Cardiomegaly

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ICD-10 codes5

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ICD-10 Coding for Enlarged Heart(I51.7, I11.0, I11.9)

Documentation & Coding Risks

Frequently Asked Questions

What is the ICD-10 code for an enlarged heart?

Can cardiomegaly be a primary diagnosis?

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