I27.9 Pulmonary heart disease, unspecified

Billable ICD-10-CM code, FY2026.

Applicable to

• Chronic cardiopulmonary disease

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)

Diagnosis Index entries for I27.9

• Disease, diseased › cardiopulmonary, chronic
• Disease, diseased › heart (organic) › pulmonary (chronic)
• Disease, diseased › pulmonary › heart

Nearby codes

• I27.840 Fontan-associated liver disease [FALD]
• I27.841 Fontan-associated lymphatic dysfunction
• I27.848 Other Fontan-associated condition
• I27.849 Fontan related circulation, unspecified
• I27.89 Other specified pulmonary heart diseases
• I27.9 Pulmonary heart disease, unspecified (this code)