2026 ICD-10-CM Diagnosis Code I26.99Other pulmonary embolism without acute cor pulmonale
ICD-10-CM Codes›I00–I99›I26-I28›I26
- Billable — Valid for Submission
- Not Chronic
I26.99 is a billable ICD-10-CM diagnosis code for other pulmonary embolism without acute cor pulmonale. 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 Acute pulmonary embolism.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Acute massive pulmonary embolism
- Acute pulmonary embolism
- Acute pulmonary thromboembolism
- Arterial air embolus
- Embolic infarction
- Fat embolism - obstetric
- Hemorrhagic infarction
- Hemorrhagic pulmonary infarction
- Infarction of lung due to embolus
- Infarction of lung due to iatrogenic pulmonary embolism
- Obstetric pulmonary embolism
- Obstetric pulmonary thromboembolism
- Obstetric pyemic and septic pulmonary embolism
- Obstetrical blood clot embolism
- Obstetrical pulmonary fat embolism
- Postoperative pulmonary embolus
- Postoperative pulmonary thromboembolism
- Pulmonary air embolism
- Pulmonary artery embolism due to foreign body
- Pulmonary artery thrombosis
- Pulmonary blood vessel injury
- Pulmonary embolism
- Pulmonary embolism due to and following acute myocardial infarction
- Pulmonary embolism on long-term anticoagulation therapy
- Pulmonary embolism with pulmonary infarction
- Pulmonary fat embolism
- Pulmonary hypertension due to pulmonary veno-occlusive disease
- Pulmonary infarction
- Pulmonary microemboli
- Pulmonary necrosis
- Pulmonary oil microembolism
- Pulmonary thromboembolism
- Pulmonary thrombosis
- Pulmonary tumor embolism
- Pulmonary venous thrombosis
- Recurrent pulmonary embolism
- Septic embolus of artery
- Septic pulmonary embolism
- Subacute massive pulmonary embolism
- Tumor embolus
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Inclusion Terms
- Acute pulmonary embolism NOS
- Other thrombotic pulmonary embolism without acute cor pulmonale
- Pulmonary embolism NOS
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
- Embolism (multiple) (paradoxical) - I74.9
- pulmonary (acute) (artery) (vein) - I26.99
- specified NEC - I26.99
External Cause of Injuries IndexGuidance
References for this code in the External Cause of Injuries Index.
- Embolism(multiple) (paradoxical)
- pulmonary (acute) (artery) (vein)
- Embolism(multiple) (paradoxical)
- thrombotic
- specified NEC
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Pulmonary Embolism
blocking of the pulmonary artery or one of its branches by an embolus.Pulmonary Infarction
necrosis of lung tissue that is cause by the lack of oxygen or blood supply. the most common cause of pulmonary infarction is a blood clot in the lung.Pulmonary Infarction
localized necrosis of lung tissue caused by obstruction of the arterial blood supply, most often due to pulmonary embolism.Acute Pulmonary Embolism
an acute embolism to the pulmonary vasculature.
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 I26.99 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About I26.99Overview
Is I26.99 (Pulmonary embolism without acute cor pulmonale) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report other pulmonary embolism without acute cor pulmonale on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does I26.99 group to?
When other pulmonary embolism without acute cor pulmonale 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 I26.99?
Under the General Equivalence Mappings, other pulmonary embolism without acute cor pulmonale converts to ICD-9-CM 415.19 (pulm embol/infarct NEC). The mapping is approximate, so confirm the match fits the documentation.
Footnotes
[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.
