A51.39 – Other secondary syphilis of skin
ICD-10-CM 2027 diagnosis code · Infections with a predominantly sexual mode of transmission
ICD-10-CM code
A51.39
- Code
A51.39(claims format:A5139)- Description
- Other secondary syphilis of skin
- 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
- A51 › A51.3
Notes for A51.39
Applicable to:
- Syphilitic leukoderma
- Syphilitic mucous patch
Excludes1 (not coded here):
- late syphilitic leukoderma (A52.79)
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 A51.39
Entries in the ICD-10-CM alphabetic index that lead to this code:
- Rupia
- Syphilid
- Mucous, patches
- Patches, mucous
- Syphilis, syphilitic, lip
- Syphilis, syphilitic, skin
- Syphilis, syphilitic, mouth
- Syphilis, syphilitic, ulcer
- Syphilis, syphilitic, leukoderma
- Syphilis, syphilitic, early, skin
- Syphilis, syphilitic, early, ulcer
- Syphilis, syphilitic, mucocutaneous
- Syphilis, syphilitic, mucous, patches
- Syphilis, syphilitic, secondary, anus
- Syphilis, syphilitic, anus, secondary
- Syphilis, syphilitic, secondary, skin
- Syphilis, syphilitic, secondary, mouth
- Syphilis, syphilitic, secondary, vulva
- Syphilis, syphilitic, secondary, ulcer
- Syphilis, syphilitic, mucous, membrane
- Syphilis, syphilitic, vulva, secondary
- Syphilis, syphilitic, tonsil, secondary
- Leukoderma, leukodermia NEC, syphilitic
- Syphilis, syphilitic, secondary, tonsil
- Syphilis, syphilitic, pharynx, secondary
Related codes in A51.3
- A51.31 – Condyloma latumBillable
- A51.32 – Syphilitic alopeciaBillable
Frequently asked questions
What is ICD-10 code A51.39?
A51.39 is the ICD-10-CM code for other secondary syphilis of skin, in the block A50-A64 (Infections with a predominantly sexual mode of transmission).
Is A51.39 a billable code?
Yes. A51.39 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does A51.39 belong to?
It belongs to category A51 – Early 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.