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ICD-10/I42.89

I42.89 ICD-10-CM Code: Other cardiomyopathies not elsewhere classified

I42.89 is the authoritative medical code for Other cardiomyopathies not elsewhere classified. This classification is used in medical billing and clinical recording to specify the clinical criteria for other cardiomyopathies not elsewhere classified (ICD-10-CM I42.89), ensuring healthcare documentation aligns with current federal coding standards.

Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.

Code Set: New for FY2027 — not valid before October 1, 2026. FY2026 took effect October 1, 2025.

Official Registry Overview & Definition

No additional overview provided for this record.

Official Tabular Instructional Notes

Sequencing, inclusion, and exclusion notes published for I42.89 in the official ICD-10-CM tabular list.

Includes

Conditions the official ICD-10-CM tabular list includes under this code.

  • myocardiopathy

Excludes2 — Not Included Here

Conditions not covered by this code, but which may be reported alongside it when both are present.

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

Code First

Underlying conditions that must be sequenced before this code.

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

Frequently Asked Questions (FAQ) & Clinical Guidance

Can I42.89 be reported alongside related conditions?

Per official ICD-10-CM Excludes2 instructions, I42.89 and the following are not considered part of each other and may both be reported when both conditions are present: ischemic cardiomyopathy (I25.5); peripartum cardiomyopathy (O90.3); ventricular hypertrophy (I51.7).

Does I42.89 need to be sequenced after another code?

Yes. Code first: pre-existing cardiomyopathy complicating pregnancy and puerperium (O99.4).

Nearest Codes in This Family

Official ICD-10-CM classifications closest to I42.89 in its code family, with their registry titles.

  • I42.1 — Obstructive hypertrophic cardiomyopathy
  • I42.2 — Other hypertrophic cardiomyopathy
  • I42.3 — Endomyocardial (eosinophilic) disease
  • I42.4 — Endocardial fibroelastosis
  • I42.5 — Other restrictive cardiomyopathy
  • I42.6 — Alcoholic cardiomyopathy
  • I42.7 — Cardiomyopathy due to drug and external agent
  • I42.8 — Other cardiomyopathies
  • I42.81 — Arrhythmogenic cardiomyopathy
  • I42.9 — Cardiomyopathy, unspecified

View all codes in the I42 family

Indexed Clinical Terms (10)

Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code.

  • Becker's, cardiomyopathy
  • Cardiomyopathy (familial) (idiopathic), newborn
  • Cardiomyopathy (familial) (idiopathic), non-ischemic
  • Cardiomyopathy (familial) (idiopathic), obscure of Africa
  • Cardiomyopathy (familial) (idiopathic), specified NEC
  • Collagenosis, collagen disease (nonvascular) (vascular), cardiovascular
  • Myocardiopathy (congestive) (constrictive) (familial) (hypertrophic nonobstructive) (idiopathic) (infiltrative) (obstructive) (primary) (restrictive) (sporadic), obscure (African)
  • Newborn (infant) (liveborn) (singleton), affected by, cardiomyopathy
  • South African cardiomyopathy syndrome
  • Syndrome, South African cardiomyopathy