A52.74 ICD-10-CM Code: Syphilis of liver and other viscera
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FY 2026 Apr update / Certain infectious and parasitic diseases (A00-B99) / Infections with a predominantly sexual mode of transmission (A50-A64)
A52.74
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceSyphilis of liver and other viscera
This code describes syphilis infection that has spread to the liver and other internal organs. It represents a late-stage complication of untreated syphilis where the infection damages these vital organs.
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- Late syphilitic peritonitis
Excludes 2
OfficialICD-10-CM does not list Excludes 2 notes for A52.74 in this effective period.
Related Child Codes
Includes
OfficialICD-10-CM does not list Includes notes for A52.74 in this effective period.
Excludes 1
OfficialICD-10-CM does not list Excludes 1 notes for A52.74 in this effective period.
Code First
OfficialICD-10-CM does not list Code First sequencing instructions for A52.74 in this effective period.
Use Additional
OfficialICD-10-CM does not list Use Additional Code instructions for A52.74 in this effective period.
Code Also
OfficialICD-10-CM does not list Code Also instructions for A52.74 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 A52.74 an HCC code?
No. A52.74 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
A52.74 is the ICD-10-CM diagnosis code for syphilis of liver and other viscera. This code describes syphilis infection that has spread to the liver and other internal organs. It represents a late-stage complication of untreated syphilis where the infection damages these vital organs. A52.74 sits in the ICD-10-CM chapter for certain infectious and parasitic diseases (a00-b99), within the section covering infections with a predominantly sexual mode of transmission (a50-a64).
A52.74 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.
This code is used for tertiary syphilis affecting visceral organs; ensure documentation specifies liver involvement or other organ involvement to support this code selection.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for A52.74 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •This code is used for tertiary syphilis affecting visceral organs; ensure documentation specifies liver involvement or other organ involvement to support this code selection
- •Do not use this code for early syphilis or neurosyphilis; verify the stage of syphilis and affected organs in the clinical documentation before coding