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I50.9

I50.9: Heart failure, unspecified

Billable / specific codeICD-10-CM

I50.9 is a billable, specific ICD-10-CM code for heart failure, unspecified. It is valid for submission on a claim.

Check I50.9 with the rest of the claim: free scrubber

Excludes2: not included here, but may coexist

The excluded condition is not part of this code, but a patient can have both. You may code both.

  • fluid overload unrelated to congestive heart failure (E87.70)

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

  • Cardiac, heart or myocardial failure NOS
  • Congestive heart disease
  • Congestive heart failure NOS

Excludes2 inherited from the categories above I50.9

Not part of this code, but both may be coded when both are present.

Written on I50: Heart failure

  • cardiac arrest (I46.-)
  • neonatal cardiac failure (P29.0)

Risk adjustment

I50.9 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:

  • HCC 226 Heart Failure, Except End Stage and Acute0.360 RAF

Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score. Look up the whole chart to see which of its HCCs the hierarchy would zero.

Medicare coverage

I50.9 is named in 36 Medicare coverage policies: 36 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A52458Automatic External Defibrillators - Policy Article
  • A52850Billing and Coding: Cardiac Catheterization and Coronary Angiography
  • A55354Billing and Coding: Frequency of Hemodialysis
  • A55672Billing and Coding: Frequency of Hemodialysis

Alphabetic index entries that lead here

  • Asthenia, asthenic›cardiac
  • Asthenia, asthenic›cardiovascular
  • Asthenia, asthenic›heart
  • Asthenia, asthenic›myocardial
  • Failure, failed›cardiorenal(chronic)
  • Failure, failed›heart(acute) (senile) (sudden)
  • Failure, failed›myocardial, myocardium
  • Failure, failed›ventricular
  • Insufficiency, insufficient›myocardial, myocardium(with arteriosclerosis)
  • Paralysis, paralytic›cardiac
  • Dysfunction›ventricular›with congestive heart failure
  • Failure, failed›heart›compensated

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under I50

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.