I27.81 Cor pulmonale (chronic)

Billable ICD-10-CM code, FY2026.

Applicable to

• Cor pulmonale NOS

Excludes1 (never code together)

• acute cor pulmonale (I26.0-)

Code also

• , if applicable, right heart failure (I50.81-)

Risk adjustment (HCC)

• CMS-HCC V28: HCC 226 — Heart Failure, Except End-Stage and Acute
• CMS-HCC V22: HCC 85 — Congestive Heart Failure
• RxHCC V08: HCC 184 — Pulmonary Hypertension, Except Arterial, and Other Pulmonary Heart Disease
• ESRD V24: HCC 85

MS-DRG index

Defines the logic of DRG(s) 314-316 in MDC 05.

Approximate ICD-9-CM (GEMs)

• 416.9 Chronic pulmonary heart disease, unspecified (approximate)

Code annotations containing back-references to I27.81

Back-references to I27.81

• Type 1 Excludes: I26 Pulmonary embolism ("cor pulmonale without embolism (I27.81)")

Diagnosis Index entries for I27.81

• Cor › pulmonale
• Cor › pulmonale › acute › without pulmonary embolism
• Cor › pulmonale › chronic
• Pancake heart › with cor pulmonale (chronic)

Nearby codes

• I27.22 Pulmonary hypertension due to left heart disease
• I27.23 Pulmonary hypertension due to lung diseases and hypoxia
• I27.24 Chronic thromboembolic pulmonary hypertension
• I27.29 Other secondary pulmonary hypertension
• I27.8 Other specified pulmonary heart diseases
• I27.81 Cor pulmonale (chronic) (this code)
• I27.82 Chronic pulmonary embolism
• I27.83 Eisenmenger's syndrome
• I27.84 Fontan related circulation
• I27.840 Fontan-associated liver disease [FALD]
• I27.841 Fontan-associated lymphatic dysfunction