Other pulmonary heart diseases
In Pulmonary heart disease and diseases of pulmonary circulation (I26-I28), chapter 9: Diseases of the Circulatory System
17 billable codes under I27: 4 are a CC; 13 map to HCC 226 (Heart Failure, Except End-Stage and Acute), HCC 267 (Deep Vein Thrombosis and Pulmonary Embolism).A CC or MCC (major CC) is a secondary diagnosis that raises the MS-DRG payment. An HCC counts toward a Medicare Advantage patient's risk score.
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Official coding guidelines
From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.
Covers hypertension with heart and kidney disease, coronary artery disease with angina, perioperative stroke, cerebrovascular sequelae, and acute myocardial infarction types and timing.
- Hypertension (page 50)
- Atherosclerotic Coronary Artery Disease and Angina (page 52)
- Intraoperative and Postprocedural Cerebrovascular Accident (page 53)
- Sequelae of Cerebrovascular Disease (page 53)
- Acute myocardial infarction (AMI) (page 54)
All codes under I27
I27 can't be used on a claim. Pick a billable code below; grey headings group them.
- I27.0Primary pulmonary hypertension
- I27.1Kyphoscoliotic heart disease
- I27.2Other secondary pulmonary hypertension
- I27.20Pulmonary hypertension, unspecified
- I27.21Secondary pulmonary arterial hypertension
- I27.22Pulmonary hypertension due to left heart disease
- I27.23Pulmonary hypertension due to lung diseases and hypoxia
- I27.24Chronic thromboembolic pulmonary hypertension
- I27.29Other secondary pulmonary hypertension
- I27.8Other specified pulmonary heart diseases
- I27.81Cor pulmonale (chronic)
- I27.82Chronic pulmonary embolism
- I27.83Eisenmenger's syndrome
- I27.84Fontan related circulation
- I27.840Fontan-associated liver disease [FALD]
- I27.841Fontan-associated lymphatic dysfunction
- I27.848Other Fontan-associated condition
- I27.849Fontan related circulation, unspecified
- I27.89Other specified pulmonary heart diseases
- I27.9Pulmonary heart disease, unspecified
I27 MS-DRGs
As the principal diagnosis, the billable codes under I27 group to these 14 MS-DRGs (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.
- DRG 314 Other Circulatory System Diagnoses with MCC (14 of 17 codes)
- DRG 315 Other Circulatory System Diagnoses with CC (14 of 17 codes)
- DRG 316 Other Circulatory System Diagnoses without CC/MCC (14 of 17 codes)
- DRG 173 Ultrasound Accelerated and Other Thrombolysis with Principal Diagnosis Pulmonary Embolism (1 of 17 codes)
- DRG 175 Pulmonary Embolism with MCC or Acute Cor Pulmonale (1 of 17 codes)
- DRG 176 Pulmonary Embolism without MCC (1 of 17 codes)
- DRG 441 Disorders of Liver Except Malignancy, Cirrhosis or Alcoholic Hepatitis with MCC (1 of 17 codes)
- DRG 442 Disorders of Liver Except Malignancy, Cirrhosis or Alcoholic Hepatitis with CC (1 of 17 codes)
- DRG 443 Disorders of Liver Except Malignancy, Cirrhosis or Alcoholic Hepatitis without CC/MCC (1 of 17 codes)
- DRG 791 Prematurity with Major Problems (1 of 17 codes)
- DRG 793 Full Term Neonate with Major Problems (1 of 17 codes)
- DRG 808 Major Hematological and Immunological Diagnoses Except Sickle Cell Crisis and Coagulation Disorders with MCC (1 of 17 codes)
- DRG 809 Major Hematological and Immunological Diagnoses Except Sickle Cell Crisis and Coagulation Disorders with CC (1 of 17 codes)
- DRG 810 Major Hematological and Immunological Diagnoses Except Sickle Cell Crisis and Coagulation Disorders without CC/MCC (1 of 17 codes)
About the condition
Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.
Heart Diseases
Heart disease is a general term that includes many types of heart problems. It's a type of cardiovascular disease, which means heart and blood vessel disease.
Read more about heart diseases on MedlinePlusCode history
Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.