ICD-10-CM › I00-I99 › I30-I5A › I50 Heart failure › I50.9
Heart failure, 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 Heart failure, 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 I50 Heart failure
Excludes2 - not included here
- cardiac arrest (I46.-)
- neonatal cardiac failure (P29.0)
Code first
- heart failure complicating abortion or ectopic or molar pregnancy (O00-O07, O08.8)
- heart failure due to hypertension (I11.0)
- heart failure due to hypertension with chronic kidney disease (I13.-)
- heart failure following surgery (I97.13-)
- obstetric surgery and procedures (O75.4)
- rheumatic heart failure (I09.81)
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.
- chf
- Deficit
- Pitting
- Lipedema
- Worn out
- Lassitude
- Congestive
- Malfunction
- Avitaminosis
- Fluid > heart
- Crisis > heart
- Storm, thyroid
- Hypovitaminosis
- Paresis > heart
- Toxic > thyroid
- Stasis > cardiac
- Dropsy, dropsical
- Hydrops > cardiac
- Retention > water
- Acropachy, thyroid
- Acropathy, thyroid
- Anasarca > cardiac
- Thyrotoxic > storm
- Vitamin deficiency
- Myasthenia > cordis
- Thyrotoxic > crisis
- Fatigue > myocardium
- Low > output syndrome
- Deprivation > vitamins
- Sudden > heart failure
- Thyrotoxicosis > heart
- Apathetic thyroid storm
- Edema, edematous > heart
- Dropsy, dropsical > heart
- Failure, failed > cardiac
- Asthenia, asthenic > heart
- Edema, edematous > cardiac
- Asthenia, asthenic > cardiac
- Failure, failed > congestive
- Syndrome > cardiorenal Note:
Showing 40 of 104 index phrases.
Codes in the same group
| Code | Description | Status |
|---|---|---|
| I50.1 | Left ventricular failure, unspecified | Valid |
| I50.2 | Systolic (congestive) heart failure | Not billable |
| I50.3 | Diastolic (congestive) heart failure | Not billable |
| I50.4 | Combined systolic (congestive) and diastolic (congestive) heart failure | Not billable |
| I50.8 | Other heart failure | Not billable |