ICD-10-CM › I00-I99 › I30-I5A › I51 Complications and ill-defined... › I51.4
Myocarditis, unspecified
ValidICD-10-CM diagnosis code.
Valid for claims with a date of service in the current code year.
What has happened to this code
Every change the publisher made, from 2007 to now. Entries marked draft are from the pre-implementation releases: ICD-10 took effect on 1 October 2015, so nothing before FY2016 was ever valid on a claim.
- FY2007 Added to the draft code set draft Myocarditis, unspecified
Official coding rules
Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.
Inherited from I51 Complications and ill-defined descriptions of heart disease
Excludes2 - not included here
- heart disease specified as rheumatic (I00-I09)
How CDC's index refers to this code
Wording from the official alphabetic index. Much of it appears nowhere in the code description, which is why a search for the everyday phrase so often finds nothing.
- Cardiosis
- Arteriolith
- Bad > heart
- Cardiopathy
- Mesarteritis
- Ailment heart
- Atheromatosis
- Angiosclerosis
- Cardiostenosis
- Change > heart
- Lesion > heart
- Strain > heart
- Arteriofibrosis
- Atherosclerosis
- Fibroid > heart
- Morbus > cordis
- Organic > heart
- Seizure > heart
- Trouble > heart
- Cachexia > heart
- Collapse > heart
- Lesion > cardiac
- Thromboarteritis
- Stricture > heart
- Arteriolosclerosis
- Arteritis > senile
- Cachexia > cardiac
- Hardening > artery
- Compression > heart
- Myofibrosis > heart
- Stricture > cardiac
- Arteriolar sclerosis
- Toxemia > myocardial
- Arteritis > deformans
- Collapse > myocardial
- Endarteritis > senile
- Low > cardiac reserve
- Ossification > artery
- Arteritis > obliterans
- Atheroma, atheromatous
Showing 40 of 126 index phrases.
Codes in the same group
| Code | Description | Status |
|---|---|---|
| I51.0 | Cardiac septal defect, acquired | Valid |
| I51.1 | Rupture of chordae tendineae, not elsewhere classified | Valid |
| I51.2 | Rupture of papillary muscle, not elsewhere classified | Valid |
| I51.3 | Intracardiac thrombosis, not elsewhere classified | Valid |
| I51.5 | Myocardial degeneration | Valid |
| I51.7 | Cardiomegaly | Valid |
| I51.8 | Other ill-defined heart diseases | Not billable |
| I51.9 | Heart disease, unspecified | Valid |