What is the ICD-10-CM code for cardiomegaly?

The primary ICD-10-CM code for cardiomegaly is I51.7 (Cardiomegaly). There are 6 billable cardiomegaly codes in FY2027, covering different types and underlying causes.

How many ICD-10-CM codes are there for cardiomegaly?

There are 6 ICD-10-CM codes for cardiomegaly in the FY2027 tabular list, of which 6 are billable. These codes fall under Chapter 9 of the ICD-10-CM classification.

Which chapter covers cardiomegaly in ICD-10-CM?

Cardiomegaly codes are classified in Chapter 9 of the ICD-10-CM tabular list: I00–I99 (Diseases of the Circulatory System).

Cardiomegaly ICD-10-CM codes

ICD-10-CM codes for cardiomegaly (enlarged heart), including cardiac dilatation, ventricular hypertrophy, and hypertensive heart disease.

6 codes, 6 billable. FY2027, valid from October 1, 2026. In chapter 9: Diseases of the Circulatory System.

How to code Cardiomegaly

I51.7 covers cardiomegaly, cardiac dilatation, cardiac hypertrophy, and ventricular dilatation, including left ventricular hypertrophy. When the patient also has hypertension, ICD-10-CM presumes a link, so hypertensive heart disease I11.9 (or I11.0 with heart failure) is sequenced before I51.7, unless the provider documents that the enlargement is unrelated.

An enlarged heart seen only on imaging, without a clinical diagnosis from the provider, is R93.1 (abnormal findings on diagnostic imaging of heart). Enlargement due to cardiomyopathy is coded to I42.-, and congenital cardiomegaly is Q24.8.

All Cardiomegaly codes

More Condition Guides

Diabetes Mellitus Hypertension Pneumonia COPD Asthma Chronic Kidney Disease Heart Failure Atrial Fibrillation Sepsis GERD Urinary Tract Infection Stroke (Cerebral Infarction)All 335 guides