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ICD-10-CM I50.814: Right heart failure due to left heart failure

I50.814 is the billable ICD-10-CM code for right heart failure due to left heart failure, in category I50 (Heart failure) of the Other forms of heart disease section. As a principal diagnosis it groups to MS-DRG 291 Heart Failure and Shock with MCC, MS-DRG 292 Heart Failure and Shock with CC, MS-DRG 293 Heart Failure and Shock without CC/MCC (MDC 05 MDC 05: Diseases and Disorders of the Circulatory System); or MS-DRG 791 Prematurity with Major Problems, MS-DRG 793 Full Term Neonate with Major Problems (MDC 15 MDC 15: Newborns and Other Neonates with Conditions Originating in Perinatal Period). It maps to HCC 226 (Heart Failure, Except End-Stage and Acute) in CMS-HCC V28. 36 LCD billing and coding articles list it as covered.

Compiled from CMS files by the QuickIntell RCM Editorial Team · Data effective · Method: reference methodology · Report a data correction

Data currency: ICD-10-CM code descriptions: FY2027 (effective October 1, 2026); IPPS Table 5 (MS-DRG weights): v44 FY2027 (final rule + CN3) (effective October 1, 2026); ICD-10-CM to HCC mapping: PY2027 initial ICD-10-CM mappings (dates of service 2026) (payment year 2027); Medicare Coverage Database billing and coding articles: MCD release October 8, 2026 (effective October 4, 2026). Next CMS release: FY2028 code files, effective October 1, 2027 for the ICD-10-CM code descriptions; FY2028 final rule (August 2027), effective October 1, 2027; an April 1 interim grouper update when CMS issues one for the IPPS Table 5 (MS-DRG weights); PY2028 advance notice (February 2027) and the PY2027 midyear final mapping (spring 2027) for the ICD-10-CM to HCC mapping; weekly, every Thursday for the Medicare Coverage Database billing and coding articles.

Code
I50.814
billable FY2027 ICD-10-CM code
Category
I50 Heart failure
Chapter
9: Diseases of the circulatory system (I00-I99)
CC/MCC (MS-DRG v44)
Neither
CMS-HCC V28
HCC 226
POA reporting
Required

Tabular list notes for I50.814

The tabular list has no notes on I50.814 itself; the notes below apply from its parent headings.

Inherited from I50 (Heart failure)

Excludes2 (not part of this condition, may be coded together)
  • 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)

Inherited from I50.81 (Right heart failure)

Inclusion terms
  • Right ventricular failure

MS-DRG grouping when I50.814 is the principal diagnosis

MS-DRG v44 groups for I50.814 as principal diagnosis
MDCMS-DRGs
05 MDC 05: Diseases and Disorders of the Circulatory System291292293
15 MDC 15: Newborns and Other Neonates with Conditions Originating in Perinatal Period791793

The final group also depends on procedures, secondary diagnoses and discharge status; the MS-DRG lookup for I50.814 shows the full grouping logic.

CC/MCC status and inpatient edits

I50.814 is neither a CC nor an MCC under MS-DRG v44, so as a secondary diagnosis it does not raise the MS-DRG severity level. Check I50.814 against a principal diagnosis.

  • Present on admission: a POA indicator is required on inpatient claims.

CMS-HCC V28 risk adjustment

In the PY2027 mapping, I50.814 maps to HCC 226 (Heart Failure, Except End-Stage and Acute). The HCC lookup shows the RAF weight and the hierarchy.

LCD billing and coding articles that list I50.814

36 current Medicare billing and coding articles list I50.814 among the diagnoses that support medical necessity for the services they cover.

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Frequently asked questions

What does ICD-10-CM I50.814 mean?

I50.814 means right heart failure due to left heart failure. It is one of 23 billable codes under I50, heart failure.

Which MS-DRG does I50.814 group to?

As the principal diagnosis, I50.814 groups to MS-DRG 291 Heart Failure and Shock with MCC, MS-DRG 292 Heart Failure and Shock with CC, MS-DRG 293 Heart Failure and Shock without CC/MCC (MDC 05 MDC 05: Diseases and Disorders of the Circulatory System); or MS-DRG 791 Prematurity with Major Problems, MS-DRG 793 Full Term Neonate with Major Problems (MDC 15 MDC 15: Newborns and Other Neonates with Conditions Originating in Perinatal Period) under MS-DRG v44, before procedures and secondary diagnoses are applied.

Does I50.814 map to an HCC?

Yes: HCC 226, Heart Failure, Except End-Stage and Acute, in the PY2027 CMS-HCC V28 mapping.

Sources

Every figure on this page is taken from the CMS publications below, as released by the Centers for Medicare & Medicaid Services. Projection built 2026-10-10. Verify against the primary file before billing or contracting decisions. The reference methodology explains how each figure is computed from these files.

Disclaimer

The descriptor and notes are reproduced from the FY2027 ICD-10-CM files; MS-DRG, CC/MCC and HCC facts come from the CMS FY2027 and PY2027 tables. Code from the medical record and the ICD-10-CM Official Guidelines. Not legal, clinical or billing advice.

Found a figure that does not match the CMS file? Report a data correction with the CMS file and the value you expected; the request reaches the editorial team through the contact form.