FY2027UpcomingSelected edition
Effective from
- Added
Dilated cardiomyopathy, unspecified
Billable diagnosis code
CDC/NCHS · FY2027pre-existing cardiomyopathy complicating pregnancy and puerperium (O99.4)
Coverage depends on the payer, service and applicable policy. A billable code does not guarantee payment.
For US diagnosis claims covered by HIPAA, ICD-10-CM is required from October 1, 2015.
Use the service date for outpatient/professional claims and the discharge date for hospital inpatient claims. Earlier encounters use ICD-9-CM; each individual code must also be valid for the applicable date.
Official coding guidelines → · CMS ↗First observed · 2026-10-01
Latest recorded change · FY2027
Effective from
Dilated cardiomyopathy, unspecified
Billable diagnosis code
CDC/NCHS · FY2027| All editions | Effective from | Code history |
|---|---|---|
| FY2027 | 2026-10-01 | Added |
Congestive cardiomyopathy, NOS
myocardiopathy
pre-existing cardiomyopathy complicating pregnancy and puerperium (O99.4)
Historical assignments from the CDC conversion table support data retrieval. They do not authorize substituting a previous code for the current code.
Previous assignment: I42.0
Other entries in the same category; these are not automatic substitutes.
| Code | Description | Category · further specificity required |
|---|---|---|
| I42.01 | Familial-genetic dilated cardiomyopathy | Billable / specific |
| I42.09 | Other dilated cardiomyopathy | Billable / specific |
Official titles and instructions are preserved in their source language. Official sources ↗