2026 ICD-10-CM Diagnosis Code I27.89Other specified pulmonary heart diseases

ICD-10-CM Codes›I00–I99›I26-I28›I27

ICD-10-CM I27.89
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

I27.89 is a billable ICD-10-CM diagnosis code for other specified pulmonary heart diseases. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 314 through 316. Coders also document this condition as cardiopulmonary schistosomiasis. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Pulmonary heart disease.

Code Identity

ICD-10-CM Code
I27.89
Billable Status
Yes — Valid for Submission
Code Describes
Other specified pulmonary heart diseases
Short Description
Other specified pulmonary heart diseases
Same as the full description in the CMS dataset.
Parent Code
I27.8
Other specified pulmonary heart diseases

Code Classification

ChapterI00–I99Diseases of the circulatory system
SectionI26-I28Pulmonary heart disease and diseases of pulmonary circulation
CategoryI27Other pulmonary heart diseases
This CodeI27.89Other specified pulmonary heart diseases

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Cardiopulmonary schistosomiasis
  • Infection of lower respiratory tract and mediastinum
  • Pulmonary schistosomiasis

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Disease, diseased
      • heart (organic)
        • pulmonary (chronic)
          • specified NEC
    • Disease, diseased
      • pulmonary
        • heart
          • specified NEC

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR CIR014
Pulmonary heart disease
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Heart Diseases

Heart disease is a general term that includes many types of heart problems. It's a type of cardiovascular disease, which means heart and blood vessel disease.

The full article covers:

  • What is heart disease?
  • What are the types of heart disease?
  • What causes heart diseases?
  • Who is more likely to develop heart diseases?
  • What are the symptoms of heart disease?
  • How are heart diseases diagnosed?
  • What are the treatments for heart disease?
  • Can heart diseases be prevented?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert I27.89 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
416.8 Chr pulmon heart dis NEC
Approximate The match is approximate rather than exact.

Code History & ChangesHistory

Replaced This code was replaced in the FY 2026 code set by:

  • I27.840 - Fontan-associated liver disease [FALD]
  • I27.840 - Fontan-associated liver disease [FALD]
  • I27.840 - Fontan-associated liver disease [FALD]
  • I27.840 - Fontan-associated liver disease [FALD]
  • I27.841 - Fontan-associated lymphatic dysfunction
  • I27.841 - Fontan-associated lymphatic dysfunction
  • I27.841 - Fontan-associated lymphatic dysfunction
  • I27.841 - Fontan-associated lymphatic dysfunction
  • I27.848 - Other Fontan-associated condition
  • I27.848 - Other Fontan-associated condition
  • I27.848 - Other Fontan-associated condition
  • I27.848 - Other Fontan-associated condition
  • I27.849 - Fontan related circulation, unspecified
  • I27.849 - Fontan related circulation, unspecified
  • I27.849 - Fontan related circulation, unspecified
  • I27.849 - Fontan related circulation, unspecified
FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About I27.89Overview

Is I27.89 (Other specified pulmonary heart diseases) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report other specified pulmonary heart diseases on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does I27.89 group to?

When other specified pulmonary heart diseases is the principal diagnosis on an inpatient stay, it groups to MS-DRG 314, 315, 316, with relative weights from 0.6821 to 2.0852 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of I27.89?

Under the General Equivalence Mappings, other specified pulmonary heart diseases converts to ICD-9-CM 416.8 (chr pulmon heart dis NEC). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.