NPI Atlas

I27.84 – Fontan related circulation

ICD-10-CM 2027 diagnosis code · Pulmonary heart disease and diseases of pulmonary circulation

Non-billable header

ICD-10-CM code I27.84

Code: I27.84 (claims format: I2784)
Description: Fontan related circulation
Billable: No – use a more specific code below
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 9. Diseases of the circulatory system (I00-I99)
Block: I26-I28 Pulmonary heart disease and diseases of pulmonary circulation
Parent codes: I27 › I27.8

Billable codes under I27.84

I27.84 is a header code and cannot be used on claims. Choose the most specific code:

I27.840 – Fontan-associated liver disease [FALD]Billable
I27.841 – Fontan-associated lymphatic dysfunctionBillable
I27.848 – Other Fontan-associated conditionBillable
I27.849 – Fontan related circulation, unspecifiedBillable

Related codes in I27.8

I27.81 – Cor pulmonale (chronic)Billable
I27.82 – Chronic pulmonary embolismBillable
I27.83 – Eisenmenger's syndromeBillable
I27.89 – Other specified pulmonary heart diseasesBillable

Frequently asked questions

What is ICD-10 code I27.84?

I27.84 is the ICD-10-CM code for fontan related circulation, in the block I26-I28 (Pulmonary heart disease and diseases of pulmonary circulation).

Is I27.84 a billable code?

No. I27.84 is a header code with more specific child codes; report one of the billable codes listed above.

What category does I27.84 belong to?

It belongs to category I27 – Other pulmonary heart diseases.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.