2025 ICD-10-CM Diagnosis Code I27.20

Pulmonary hypertension, unspecified

  • I27.20 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 I27.20 became effective on October 1, 2024.
  • This is the American ICD-10-CM version of I27.20 – other international versions of ICD-10 I27.20 may differ.

Applicable To

  • Pulmonary hypertension NOS

The following code(s) above I27.20 contain annotation back-references

 that may be applicable to I27.20:

  • I00-I99  Diseases of the circulatory system
  • I27.2  Other secondary pulmonary hypertension

ICD-10-CM I27.20 is grouped within Diagnostic Related Group(s) (MS-DRG v42.0):

  • 314 Other circulatory system diagnoses with mcc
  • 315 Other circulatory system diagnoses with cc
  • 316 Other circulatory system diagnoses without cc/mcc

Convert I27.20 to ICD-9-CMCode History

  • 2018 (effective 10/1/2017): New code
  • 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

Code annotations containing back-references to I27.20:

  • Type 1 Excludes: I27.0

Diagnosis Index entries containing back-references to I27.20:

  • Disease, diseased – see also Syndrome
    • pulmonary – see also Disease, lung
      • hypertensive (vascular) I27.20 – see also Hypertension, pulmonary
  • Hypertension, hypertensive (accelerated) (benign) (essential) (idiopathic) (malignant) (systemic) I10
    • pulmonary I27.20
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