I11 vs I51.7
I11 and I51.7 can never be reported together. ICD-10-CM declares them mutually exclusive with an Excludes1 note, meaning the two conditions cannot occur in the same patient — so exactly one of them is correct for any given encounter.
The official note, declared on I51.7
cardiomegaly due to hypertension (I11.-)
I11
Hypertensive heart disease
Not billable
- Chapter 9
- Diseases of the circulatory system
- Section
- I10-I1A
Use when the record says
- any condition in I50.- or I51.4-I51.7, I51.89, I51.9 due to hypertension
I51.7
Cardiomegaly
Billable
- Chapter 9
- Diseases of the circulatory system
- Section
- I30-I5A
Use when the record says
- Cardiac dilatation
- Cardiac hypertrophy
- Ventricular dilatation
Indexed under
- Preponderance, left or right ventricular
- Athlete's › heart
- Cardiomegaly › idiopathic
- Hypertrophy, hypertrophic › cardiac
Excludes1 is not always absolute: where two conditions covered by the note are genuinely unrelated, CMS guidance permits reporting both. Document the reasoning rather than assuming it. More on Excludes1 vs Excludes2 · FY2027