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I27.848

I27.848Other Fontan-associated condition

Billable / specific codeICD-10-CM

I27.848 is a billable, specific ICD-10-CM code for other fontan-associated condition. It is valid for submission on a claim.

Use additional code

Add a secondary code to capture the detail described below.

  • code to specify the Fontan associated condition

Risk adjustment

I27.848 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Medicare coverage

I27.848 is named in 21 Medicare coverage policies 21 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

  • A56476Billing and Coding: Cardiac Radionuclide Imaging
  • A56476Billing and Coding: Cardiac Radionuclide Imaging
  • A56500Billing and Coding: Cardiac Catheterization and Coronary Angiography
  • A56580Billing and Coding: Computerized Axial Tomography (CT), Thorax

How I27.848 is indexed

Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to I27.848.

  • ConditionFontan-associated, specified NEC
  • CirculationFontan relatedwithFontan-associated condition, specified NEC

Related codes at this level

Codes that share I27.84. If I27.848 is not quite right, the correct code is usually one of these.

Questions about I27.848

Is I27.848 a billable ICD-10-CM code?
Yes. I27.848 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does I27.848 sit in the tabular list?
Diseases of the circulatory system (I00-I99), in the block Pulmonary heart disease and diseases of pulmonary circulation (I26-I28).
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.