ICD-10-CM Alphabetic Index · FY 2026 53 Entries

Cardiomyopathy in the ICD-10-CM Index ICD-10-CM

The main term Cardiomyopathy (familial) (idiopathic) carries 53 index entries pointing to 29 ICD-10-CM codes. The default entry is I42.9, the code the bare main term maps to; every indented line below refines the term by site, cause, or type. Verify any candidate code in the Tabular List before using it.

✓ Built from the official CMS FY 2026 index fileEffective Oct 1, 2025 – Sep 30, 2026
53
Index Entries
29
Codes Referenced
I42.9
Default Code
C
Letter
53 of 53 shown
ICD-10-CM

Index Entries Under Cardiomyopathy 53 entries · 29 codes

Cardiomyopathy (familial) (idiopathic) I42.9
alcoholic I42.6
amyloid E85.4
arteriosclerotic see Disease, heart, ischemic, atherosclerotic
beriberi E51.12
cobalt-beer I42.6
congenital I42.4
congestive I42.0
constrictive NOS I42.5
dilated I42.0
due to
alcohol I42.6
beriberi E51.12
cardiac glycogenosis E74.02
drugs I42.7
external agents NEC I42.7
Friedreich's ataxia G11.11
myotonia atrophica G71.11
progressive muscular dystrophy G71.09 see also Dystrophy, muscular, by type
glycogen storage E74.02
hypertensive see Hypertension, heart
hypertrophic (nonobstructive) I42.2
obstructive I42.1
congenital Q24.8
in
Chagas' disease (chronic) B57.2
acute B57.0
sarcoidosis D86.85
ischemic I25.5
metabolic E88.9
thyrotoxic E05.90
with thyroid storm E05.91
newborn I42.8
congenital I42.4
non-ischemic I42.8 see also by cause
nutritional E63.9
beriberi E51.12
obscure of Africa I42.8
peripartum O90.3
postpartum O90.3
restrictive NEC I42.5
rheumatic I09.0
secondary I42.9
specified NEC I42.8
stress induced I51.81
takotsubo I51.81
thyrotoxic E05.90
with thyroid storm E05.91
toxic NEC I42.7
tuberculous A18.84
viral B33.24

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Related Index Terms

All index terms starting with CIndex to Diseases and InjuriesICD-10-CM Code Lookup

Source: Centers for Medicare & Medicaid Services, FY 2026 ICD-10-CM Index to Diseases and Injuries release files, effective October 1, 2025 through September 30, 2026.