I42.0: Dilated cardiomyopathy

No longer billable · FY2027

Not billable: this is a header. Use one of the more specific codes below.

• No longer billable from October 1, 2026: it became a header for more specific codes: I42.00, I42.01, I42.09.

Code breakdown

Coding notes

Includes (from I42)

• myocardiopathy

Excludes2 (from I42)

• ischemic cardiomyopathy (I25.5)
• peripartum cardiomyopathy (O90.3)
• ventricular hypertrophy (I51.7)

Code first (from I42)

• pre-existing cardiomyopathy complicating pregnancy and puerperium (O99.4)

Codes under I42.0

• I42.00 Dilated cardiomyopathy, unspecified
• I42.01 Familial-genetic dilated cardiomyopathy
• I42.09 Other dilated cardiomyopathy

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All FY2027 ICD-10-CM changes

ICD-10-CM codes and descriptions are from the CMS and NCHS code files. Coverage is from the CMS Medicare Coverage Database billing and coding articles.