I27.21
Secondary pulmonary arterial hypertension
- Release
- FY 2027
- Effective
Hierarchy
Where I27.21 sits in the official hierarchy. Each level is the code it is classified under.
- I27 Other pulmonary heart diseases
- I27.2 Parent Other secondary pulmonary hypertension
- I27.21 This code Secondary pulmonary arterial hypertension
Official Coding Notes
Reproduced verbatim from the FY 2027 ICD-10-CM files. Notes labelled as inherited are declared on a parent code and apply here too.
Inclusion Terms
(Associated) (drug-induced) (toxin-induced) pulmonary arterial hypertension NOS
Inclusion Terms
(Associated) (drug-induced) (toxin-induced) (secondary) group 1 pulmonary hypertension
Code Also
associated underlying condition
Inherited from I27.2 — Other secondary pulmonary hypertension
Code Also
associated conditions if applicable, or adverse effects of drugs or toxins, such as:
Code Also
adverse effect of appetite depressants ( T50.5X5 )
Code Also
congenital heart disease (Q20-Q28)
Code Also
human immunodeficiency virus [HIV] disease ( B20 )
Code Also
polymyositis ( M33.2- )
Code Also
portal hypertension ( K76.6 )
Code Also
rheumatoid arthritis ( M05 .-)
Code Also
schistosomiasis ( B65 .-)
Code Also
Sjögren syndrome ( M35.0- )
Code Also
systemic sclerosis ( M34 .-)
Version History
How I27.21 appears in each release imported from the official files, newest first.
-
FY 2027 Effective
CurrentSecondary pulmonary arterial hypertension
-
FY 2026 Effective
UnchangedSecondary pulmonary arterial hypertension
Related Codes
Other codes under I27.2
- I27.20 Pulmonary hypertension, unspecified Billable
- I27.22 Pulmonary hypertension due to left heart disease Billable
- I27.23 Pulmonary hypertension due to lung diseases and hypoxia Billable
- I27.24 Chronic thromboembolic pulmonary hypertension Billable
- I27.29 Other secondary pulmonary hypertension Billable
Codes whose official notes reference I27.21
Data Source
Code information on this page is derived from the FY 2027 ICD-10-CM files published by CDC NCHS and CMS.
- Release
- FY 2027
- Effective
- Source file
- icd10cm-code-descriptions-2027.zip
Official ICD-10-CM source files (opens in a new tab)
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