A52.03 – Syphilitic endocarditis
ICD-10-CM 2027 diagnosis code · Infections with a predominantly sexual mode of transmission
ICD-10-CM code
A52.03
- Code
A52.03(claims format:A5203)- Description
- Syphilitic endocarditis
- Billable
- Yes – valid for HIPAA-covered transactions
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 1. Certain infectious and parasitic diseases (A00-B99)
- Block
- A50-A64 Infections with a predominantly sexual mode of transmission
- Parent codes
- A52 › A52.0
Notes for A52.03
Applicable to:
- Syphilitic aortic valve incompetence or stenosis
- Syphilitic mitral valve stenosis
- Syphilitic pulmonary valve regurgitation
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
Block A50-A64
Excludes1 (not coded here):
Excludes2 (not included here):
- human immunodeficiency virus [HIV] disease (B20)
Index terms for A52.03
Entries in the ICD-10-CM alphabetic index that lead to this code:
- Endocarditis, syphilitic
- Syphilis, syphilitic, aortic
- Endocarditis, aortic, syphilitic
- Syphilis, syphilitic, endocarditis
- Endocarditis, pulmonary, syphilitic
- Regurgitation, pulmonary, syphilitic
- Syphilis, syphilitic, valvulitis NEC
- Syphilis, syphilitic, mitral stenosis
- Stenosis, stenotic, aortic, syphilitic
- Stenosis, stenotic, mitral, syphilitic
- Syphilis, syphilitic, heart, valve NEC
- Syphilis, syphilitic, endocarditis, aortic
- Disease, diseased, heart, syphilitic, aortic
- Syphilis, syphilitic, endocarditis, pulmonary
- Disease, diseased, coronary, ostial, syphilitic
- Insufficiency, insufficient, aortic, syphilitic
Related codes in A52.0
- A52.00 – Cardiovascular syphilis, unspecifiedBillable
- A52.01 – Syphilitic aneurysm of aortaBillable
- A52.02 – Syphilitic aortitisBillable
- A52.04 – Syphilitic cerebral arteritisBillable
- A52.05 – Other cerebrovascular syphilisBillable
- A52.06 – Other syphilitic heart involvementBillable
- A52.09 – Other cardiovascular syphilisBillable
Frequently asked questions
What is ICD-10 code A52.03?
A52.03 is the ICD-10-CM code for syphilitic endocarditis, in the block A50-A64 (Infections with a predominantly sexual mode of transmission).
Is A52.03 a billable code?
Yes. A52.03 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does A52.03 belong to?
It belongs to category A52 – Late syphilis.
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.