ICD10BillableValid for clinical use
ICD-10 Code I28.9: Disease of pulmonary vessels, unspecified
Reviewed by HealthAssure Clinical TeamUpdated 26 May 2026
What is this code?
ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Diseases of the circulatory system (I00-I99).
When is it used?
- May be used when a clinician documents disease of pulmonary vessels, unspecified in a patient's medical record.
- May appear in hospital records, claims, referrals, and clinical documentation.
- This code can be used as a clinically usable diagnosis entry in standardized coding workflows.
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.
Code hierarchy
chapter
9Diseases of the circulatory system (I00-I99)
block
I26-I28Pulmonary heart disease and diseases of pulmonary circulation
category
I28Other diseases of pulmonary vessels
currentI28
Where you may see this code
You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records.
Related specialists
CardiologistGeneral Physician
Related codes
Sibling codes
Coverage-related procedures and services
CPT 93598high
CARDIAC OUTPUT MEASUREMENT(S), THERMODILUTION OR OTHER INDICATOR DILUTION METHOD, PERFORMED DURING CARDIAC CATHETERIZATION FOR THE EVALUATION OF CONGENITAL HEART DEFECTS (LIST SEPARATELY IN ADDITION TO CODE FOR PRIMARY PROCEDURE)
Source: CMS coverage guidance
CPT 93454high
CATHETER PLACEMENT IN CORONARY ARTERY(S) FOR CORONARY ANGIOGRAPHY, INCLUDING INTRAPROCEDURAL INJECTION(S) FOR CORONARY ANGIOGRAPHY, IMAGING SUPERVISION AND INTERPRETATION;
Source: CMS coverage guidance
CPT 93455high
CATHETER PLACEMENT IN CORONARY ARTERY(S) FOR CORONARY ANGIOGRAPHY, INCLUDING INTRAPROCEDURAL INJECTION(S) FOR CORONARY ANGIOGRAPHY, IMAGING SUPERVISION AND INTERPRETATION; WITH CATHETER PLACEMENT(S) IN BYPASS GRAFT(S) (INTERNAL MAMMARY, FREE ARTERIAL, VENOUS GRAFTS) INCLUDING INTRAPROCEDURAL INJECTION(S) FOR BYPASS GRAFT ANGIOGRAPHY
Source: CMS coverage guidance
CPT 93457high
CATHETER PLACEMENT IN CORONARY ARTERY(S) FOR CORONARY ANGIOGRAPHY, INCLUDING INTRAPROCEDURAL INJECTION(S) FOR CORONARY ANGIOGRAPHY, IMAGING SUPERVISION AND INTERPRETATION; WITH CATHETER PLACEMENT(S) IN BYPASS GRAFT(S) (INTERNAL MAMMARY, FREE ARTERIAL, VENOUS GRAFTS) INCLUDING INTRAPROCEDURAL INJECTION(S) FOR BYPASS GRAFT ANGIOGRAPHY AND RIGHT HEART CATHETERIZATION
Source: CMS coverage guidance
CPT 93458high
CATHETER PLACEMENT IN CORONARY ARTERY(S) FOR CORONARY ANGIOGRAPHY, INCLUDING INTRAPROCEDURAL INJECTION(S) FOR CORONARY ANGIOGRAPHY, IMAGING SUPERVISION AND INTERPRETATION; WITH LEFT HEART CATHETERIZATION INCLUDING INTRAPROCEDURAL INJECTION(S) FOR LEFT VENTRICULOGRAPHY, WHEN PERFORMED
Source: CMS coverage guidance
CPT 93459high
CATHETER PLACEMENT IN CORONARY ARTERY(S) FOR CORONARY ANGIOGRAPHY, INCLUDING INTRAPROCEDURAL INJECTION(S) FOR CORONARY ANGIOGRAPHY, IMAGING SUPERVISION AND INTERPRETATION; WITH LEFT HEART CATHETERIZATION INCLUDING INTRAPROCEDURAL INJECTION(S) FOR LEFT VENTRICULOGRAPHY, WHEN PERFORMED, CATHETER PLACEMENT(S) IN BYPASS GRAFT(S) (INTERNAL MAMMARY, FREE ARTERIAL, VENOUS GRAFTS) WITH BYPASS GRAFT ANGIOGRAPHY
Source: CMS coverage guidance
Mapped diagnoses and classifications
SNOMED_CT 703307003high
Acquired abnormality of pulmonary arterial tree
Source: SNOMED International ICD-10 map
SNOMED_CT 461408000high
Acquired abnormality of pulmonary venous structure
Source: SNOMED International ICD-10 map
SNOMED_CT 39785005high
Disorder of pulmonary circulation
Source: SNOMED International ICD-10 map
SNOMED_CT 707665002high
Pulmonary arterial tree abnormality as complication of procedure
Source: SNOMED International ICD-10 map
SNOMED_CT 707668000high
Pulmonary vein abnormality as complication of procedure
Source: SNOMED International ICD-10 map
SNOMED_CT 1208848007high
Right ventricular failure due to pulmonary vascular disease
Source: SNOMED International ICD-10 map
Coding guidelines
Compatibility
Legacy and official ICD code match exactly.
Legacy codes
I28.9
Common synonyms
Disease of pulmonary vessels, unspecifiedDisease of pulmonary vessels
Frequently asked questions
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.