A01.02 ICD-10-CM Code: Typhoid fever with heart involvement
HCC Buddy Code Card
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FY 2026 Apr update / Certain infectious and parasitic diseases (A00-B99) / Intestinal infectious diseases (A00-A09)
A01.02
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceTyphoid fever with heart involvement
Typhoid fever is a serious bacterial infection spread through contaminated food or water that has affected the heart, causing inflammation or damage to heart tissue. This is a severe form of typhoid fever that requires immediate medical attention.
CMS-HCC V28
00
RAF 0
CMS-HCC V24
00
RAF 0
ACA/HHS
00
RAF 0
ESRD/PACE
00
RAF 0
RXHCC
00
RAF 0
Code Trumping
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Code Book Path
Inclusion Terms
Official- Typhoid endocarditis
- Typhoid myocarditis
Excludes 2
OfficialICD-10-CM does not list Excludes 2 notes for A01.02 in this effective period.
Related Child Codes
Includes
OfficialICD-10-CM does not list Includes notes for A01.02 in this effective period.
Excludes 1
OfficialICD-10-CM does not list Excludes 1 notes for A01.02 in this effective period.
Code First
OfficialICD-10-CM does not list Code First sequencing instructions for A01.02 in this effective period.
Use Additional
OfficialICD-10-CM does not list Use Additional Code instructions for A01.02 in this effective period.
Code Also
OfficialICD-10-CM does not list Code Also instructions for A01.02 in this effective period.
Buddy Documentation Tip
Last updated: FY2026 ICD-10-CM Apr update, Apr 1, 2026 through Sep 30, 2026. CMS-HCC V28 is 100% phased in for payment year 2026.
Is A01.02 an HCC code?
No. A01.02 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.
Coder workflow notes
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This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
A01.02 is the ICD-10-CM diagnosis code for typhoid fever with heart involvement. Typhoid fever is a serious bacterial infection spread through contaminated food or water that has affected the heart, causing inflammation or damage to heart tissue. This is a severe form of typhoid fever that requires immediate medical attention. A01.02 sits in the ICD-10-CM chapter for certain infectious and parasitic diseases (a00-b99), within the section covering intestinal infectious diseases (a00-a09).
A01.02 is a billable ICD-10-CM code but does not map to a payment HCC under the CMS-HCC V28, V24, ESRD, or RxHCC risk adjustment models. It can be reported on Medicare Advantage encounter data submissions but it does not contribute to a beneficiary's RAF score and therefore does not affect risk-adjusted payments to the plan.
Verify documentation clearly states both typhoid fever AND heart involvement (myocarditis, pericarditis, or other cardiac manifestation) before assigning this code.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for A01.02 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Verify documentation clearly states both typhoid fever AND heart involvement (myocarditis, pericarditis, or other cardiac manifestation) before assigning this code
- •Do not use this code for uncomplicated typhoid fever; only use when cardiac complications are explicitly documented by the physician