I27.21 - Secondary pulmonary arterial hypertension
- Applicable to Secondary pulmonary arterial hypertension
- The 2025 edition of ICD10-CM I27.21 became effective on October 1, 2024.
- This is the American ICD10-CM version of I27.21 - other international versions of ICD10 I27.21 may differ.
- I27.21 is a Billable / Specific ICD10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
Inclusion Term
- (Associated) (drug-induced) (toxin-induced) pulmonary arterial hypertension NOS
- (Associated) (drug-induced) (toxin-induced) (secondary) group 1 pulmonary hypertension
codeAlso
- associated conditions if applicable, or adverse effects of drugs or toxins, such as:
- adverse effect of appetite depressants (T50.5X5)
- congenital heart disease (Q20-Q28)
- human immunodeficiency virus [HIV] disease (B20)
- polymyositis (M33.2-)
- portal hypertension (K76.6)
- rheumatoid arthritis (M05.-)
- schistosomiasis (B65.-)
- Sjögren syndrome (M35.0-)
- systemic sclerosis (M34.-)
The following codes above I27.21 contain annotation back-references that may be applicable to I27.21:
Chapter: I00-I99 Diseases of the circulatory system
Section: I26-I28 Pulmonary heart disease and diseases of pulmonary circulation
Category: I27 Other pulmonary heart diseases
Billable/Specific Code
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Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.
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