2026 ICD-10-CM Diagnosis Code I27.82Chronic pulmonary embolism

ICD-10-CM Codes›I00–I99›I26-I28›I27

ICD-10-CM I27.82
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

I27.82 is a billable ICD-10-CM diagnosis code for chronic pulmonary embolism. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 175 through 176. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Pulmonary heart disease.

Code Identity

ICD-10-CM Code
I27.82
Billable Status
Yes — Valid for Submission
Code Describes
Chronic pulmonary embolism
Short Description
Chronic pulmonary embolism
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 CodeI27.82Chronic pulmonary embolism

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Chronic pulmonary embolism
  • Chronic pulmonary thromboembolism
  • Chronic pulmonary thromboembolism without pulmonary hypertension
  • Pulmonary thromboembolism
  • Pulmonary thrombosis

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Use Additional Code

  • code, if applicable, for associated long-term current use of anticoagulants Z79.01

Type 1 Excludes

  • personal history of pulmonary embolism Z86.711

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.

    • Cor
      • pulmonale
        • chronic
          • with chronic pulmonary embolism
    • Embolism(multiple) (paradoxical)
      • pulmonary (acute) (artery) (vein)
        • chronic

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

Pulmonary Embolism

A pulmonary embolism (PE) is a sudden blockage in a lung artery. It usually happens when a blood clot breaks loose and travels through the bloodstream to the lungs. PE is a serious condition that can cause:

The full article covers:

  • What is a pulmonary embolism (PE)?
  • What causes a pulmonary embolism (PE)?
  • Who is more likely to develop a pulmonary embolism (PE)?
  • What are the symptoms of a pulmonary embolism (PE)?
  • How is a pulmonary embolism (PE) diagnosed?
  • What are the treatments for a pulmonary embolism (PE)?
  • Can pulmonary embolism (PE) be prevented?

Read the full article at MedlinePlus

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

Convert I27.82 to ICD-9-CMHistory

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

ICD-9-CM
416.2 Chr pulmonary embolism
Exact Match The mapping is direct, with no qualifiers.

Code HistoryHistory

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 I27.82Overview

Is I27.82 (Other specified pulmonary heart diseases) a billable code?

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

What MS-DRG does I27.82 group to?

When chronic pulmonary embolism is the principal diagnosis on an inpatient stay, it groups to MS-DRG 175, 176, with relative weights from 0.8050 to 1.3736 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of I27.82?

Under the General Equivalence Mappings, chronic pulmonary embolism converts to ICD-9-CM 416.2 (chr pulmonary embolism). The mapping is a direct match.

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.