I27.24
BillableChronic thromboembolic pulmonary hypertension
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
High blood pressure in the lung arteries caused by blood clots that have become chronic and do not resolve with standard treatment.
Coding Tips
- •Document the history of pulmonary embolism or deep vein thrombosis; this is a long-term consequence of thromboembolism
- •Distinguish from acute pulmonary embolism; this code indicates chronic, persistent thromboembolic disease
Clinical Significance
Chronic thromboembolic pulmonary hypertension is a potentially curable form of pulmonary hypertension caused by organized thrombi in the pulmonary vasculature. It is a long-term complication of acute pulmonary embolism and requires specialized evaluation at expert centers. Accurate coding is essential as this condition is often underdiagnosed.
Documentation Requirements
- ✓Provider diagnosis of chronic thromboembolic pulmonary hypertension
- ✓History of pulmonary embolism or deep vein thrombosis documented
- ✓Imaging evidence of chronic thrombi (CT pulmonary angiography, V/Q scan, pulmonary angiography)
- ✓Right heart catheterization confirming pulmonary hypertension
- ✓Evaluation for pulmonary thromboendarterectomy candidacy
Commonly Confused Codes
I27.82 — Chronic pulmonary embolism; describes the clot itself, not the resultant hypertensionI26.99 — Other pulmonary embolism without acute cor pulmonale; for acute, not chronic eventsI27.21 — Secondary pulmonary arterial hypertension; different mechanism than thromboembolicI27.29 — Other secondary pulmonary hypertension; use when the cause does not fit thromboembolic or other specific categories
Code Hierarchy
└I27Other pulmonary heart diseases└I27.2Other secondary pulmonary hypertension└I27.24Chronic thromboembolic pulmonary hypertension
└I27.24Chronic thromboembolic pulmonary hypertension