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ICD-10 Code I27.2: Other secondary pulmonary hypertension

I27.2 is an ICD-10 diagnosis entry used to group records related to Other secondary pulmonary hypertension. You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen. ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for Diseases of the circulatory system (I00-I99).

What is this code?

ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for Diseases of the circulatory system (I00-I99).

đź“‹Clinical overview

This ICD-10 code is commonly used when documentation describes pulmonary hypertension. The most accurate code depends on whether the condition is primary or secondary and whether the chart identifies a left-heart, lung-and-hypoxia, chronic-thromboembolic, or other driving mechanism.

When is it used?

  • May be used when a clinician documents other secondary pulmonary hypertension in a patient's medical record.
  • May appear in hospital records, claims, referrals, and clinical documentation.
  • This code may act more like a grouping or parent code, so a more specific child code may be used in final documentation when available.

What it does not mean

  • A code alone does not explain severity, treatment plan, or outcome.
  • A medical code should not be treated as a substitute for a doctor's diagnosis or advice.
  • This entry may represent a broader category rather than the most specific billable code.

đź©şClinical context

When commonly used
  • Cardiology, pulmonology, inpatient, and utilization-review workflows where pulmonary hypertension affects evaluation, treatment planning, or chronic disease follow-up.
  • Coding workflows where the chart identifies primary versus secondary pulmonary hypertension or names the underlying mechanism that changes final code specificity.
Common management context
  • Evaluation often includes echocardiography, cardiopulmonary assessment, imaging review, hemodynamic context, and follow-up of the underlying heart, lung, or thromboembolic condition.
  • Documentation usually becomes more specific when the chart identifies primary pulmonary hypertension, secondary pulmonary arterial hypertension, left-heart-disease association, lung-disease or hypoxia association, chronic thromboembolic disease, or another secondary pattern.
  • Specialist context already linked on this page includes Cardiologist, General Physician.

🔍Key distinctions

Important notes
  • This ICD-10 family captures pulmonary-hypertension diagnoses rather than systemic hypertension or unrelated pulmonary disorders without pulmonary-hypertension context.
  • Primary versus secondary disease and the documented underlying mechanism both affect final code specificity inside this family.
  • Secondary pulmonary hypertension is coded separately from primary pulmonary hypertension, and documentation often becomes more specific when the chart names the driving heart, lung, hypoxia, thromboembolic, or other mechanism.
Important exclusions
  • Eisenmenger's syndrome (I27.83)
Related codes to consider
I27.20Pulmonary hypertension, unspecified
Related pulmonary-hypertension ICD-10 code; documentation often becomes more specific when the chart identifies primary versus secondary disease or names the heart, lung, hypoxia, or thromboembolic mechanism.
I27.21Secondary pulmonary arterial hypertension
Related pulmonary-hypertension ICD-10 code; documentation often becomes more specific when the chart identifies primary versus secondary disease or names the heart, lung, hypoxia, or thromboembolic mechanism.
I27.22Pulmonary hypertension due to left heart disease
Related pulmonary-hypertension ICD-10 code; documentation often becomes more specific when the chart identifies primary versus secondary disease or names the heart, lung, hypoxia, or thromboembolic mechanism.
I27.23Pulmonary hypertension due to lung diseases and hypoxia
Related pulmonary-hypertension ICD-10 code; documentation often becomes more specific when the chart identifies primary versus secondary disease or names the heart, lung, hypoxia, or thromboembolic mechanism.

Code hierarchy

chapter
9Diseases of the circulatory system (I00-I99)
block
I26-I28Pulmonary heart disease and diseases of pulmonary circulation
category
I27Other pulmonary heart diseases
currentI27

Official coding notes

Excludes1 (do not code together)
  • Eisenmenger's syndrome (I27.83)
Code also
  • associated underlying condition

Where you may see this code

You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen.

Related specialists

CardiologistGeneral Physician

Coding guidelines

Compatibility

Legacy code aligns to an official FY 2026 category. Frontend should resolve to the official category page and surface the billable child codes.
Legacy codes
I27.2
Replacement codes
I27.20 — Pulmonary hypertension, unspecifiedI27.21 — Secondary pulmonary arterial hypertensionI27.22 — Pulmonary hypertension due to left heart diseaseI27.23 — Pulmonary hypertension due to lung diseases and hypoxiaI27.24 — Chronic thromboembolic pulmonary hypertensionI27.29 — Other secondary pulmonary hypertension

Common synonyms

Other secondary pulmonary hypertension

Frequently asked questions

Code details

CodeI27.2
SystemICD10
Display nameOther secondary pulmonary hypertension
ChapterDiseases of the circulatory system (I00-I99)
BlockPulmonary heart disease and diseases of pulmonary circulation

Flags

BillableNo
Valid clinical useNo

Source

SourceICD-10
Version2026-annual
Releaseannual
Year2026

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.