I27.849 Fontan related circulation, unspecified

Billable ICD-10-CM code, FY2026.

Risk adjustment (HCC)

• RxHCC V08: HCC 191 — Ventricular Septal Defect and Major Congenital Heart Disorders

MS-DRG index

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

Code annotations containing back-references to I27.849

Back-references to I27.84

• Type 2 Excludes: Z98 Other postprocedural states ("Fontan related circulation (I27.84-)")

Diagnosis Index entries for I27.849

• Circulation › Fontan related

Nearby codes

• I27.83 Eisenmenger's syndrome
• I27.84 Fontan related circulation
• 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 (this code)
• I27.89 Other specified pulmonary heart diseases
• I27.9 Pulmonary heart disease, unspecified