2025 ICD-10-CM Diagnosis Code I26.09

Other pulmonary embolism with acute cor pulmonale

  • I26.09 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2025 edition of ICD-10-CM I26.09 became effective on October 1, 2024.
  • This is the American ICD-10-CM version of I26.09 – other international versions of ICD-10 I26.09 may differ.

Applicable To

  • Acute cor pulmonale NOS
  • Other thrombotic pulmonary embolism with acute cor pulmonale

The following code(s) above I26.09 contain annotation back-references

 that may be applicable to I26.09:

  • I00-I99  Diseases of the circulatory system
  • I26  Pulmonary embolism

Approximate Synonyms

  • Acute cor pulmonale

ICD-10-CM I26.09 is grouped within Diagnostic Related Group(s) (MS-DRG v42.0):

  • 173 Ultrasound accelerated and other thrombolysis with principal diagnosis pulmonary embolism
  • 175 Pulmonary embolism with mcc or acute cor pulmonale
  • 176 Pulmonary embolism without mcc
  • 791 Prematurity with major problems
  • 793 Full term neonate with major problems

Convert I26.09 to ICD-9-CMCode History

  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
  • 2022 (effective 10/1/2021): No change
  • 2023 (effective 10/1/2022): No change
  • 2024 (effective 10/1/2023): No change
  • 2025 (effective 10/1/2024): No change

Diagnosis Index entries containing back-references to I26.09:

  • Cor
  • Embolism (multiple) (paradoxical) I74.9
    • pulmonary (acute) (artery) (vein) I26.99
      • with acute cor pulmonale I26.09
    • thrombotic
  • Hypertension, hypertensive (accelerated) (benign) (essential) (idiopathic) (malignant) (systemic) I10
    • pulmonaryI27.20
      • with
        • cor pulmonale (chronic) I27.29
          • acute I26.09
        • right heart ventricular strain/failureI27.29
          • acute I26.09
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