I42.8
Other cardiomyopathies
Non-billable headerNot valid on its own. Use one of the more specific codes under it.
I42.8 is a non-billable ICD-10-CM code header for other cardiomyopathies. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are I42.81 Arrhythmogenic cardiomyopathy and I42.89 Other cardiomyopathies not elsewhere classified. Its coding notes include a Code first instruction and 13 Excludes2 entries.
Code first
If the underlying condition listed here is present and known, sequence it first.
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
Inherited from I42 Cardiomyopathy
Also from chapter/block level (10 notes)
Inherited from Chapter 9 Diseases of the circulatory system
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
- systemic connective tissue disorders (M30-M36)
- transient cerebral ischemic attacks and related syndromes (G45.-)
Includes
Further defines or gives examples of the content of the category.
Inherited from I42 Cardiomyopathy
- myocardiopathy