I28.9
BillableDisease of pulmonary vessels, unspecified
HCC Category Mapping
V28HCC 226 — Heart Failure, Specified
0.000V24HCC 85 — Congestive Heart Failure
0.368ESRDHCC 85 — Congestive Heart Failure
0.000RxHCCHCC 184 — Pulmonary Hypertension, Other
0.000What This Code Means
A disease or disorder of the blood vessels in the lungs that is not more specifically identified.
Coding Tips
- •This is a non-specific code; query the provider for more detailed diagnosis information
- •Review imaging reports and pulmonary function tests for clues to more specific coding
Clinical Significance
Unspecified disease of pulmonary vessels indicates a pulmonary vascular condition without sufficient documentation to determine the specific type. This code represents a clinical gap that should prompt provider query for more precise diagnosis. Specificity improves both clinical care and risk adjustment accuracy.
Documentation Requirements
- ✓Provider diagnosis of a disease affecting pulmonary vessels
- ✓Clinical evidence of pulmonary vascular pathology
- ✓Documentation that more specific characterization is unavailable
- ✓Symptoms attributable to pulmonary vascular disease
- ✓Relevant imaging or diagnostic findings
Commonly Confused Codes
I28.8 — Other diseases of pulmonary vessels; use when a specific condition is documented but not separately classifiedI28.0 — Arteriovenous fistula of pulmonary vessels; specific vascular anomalyI28.1 — Aneurysm of pulmonary artery; specific structural findingI27.9 — Pulmonary heart disease, unspecified; involves cardiac rather than purely vascular disease
Code Hierarchy
└I28Other diseases of pulmonary vessels└I28.9Disease of pulmonary vessels, unspecified
└I28.9Disease of pulmonary vessels, unspecified