A53
⚠ Non-billable
Other and unspecified syphilis
ICD-10-CM · FY2026 · Certain Infectious and Parasitic Diseases
Code
A53
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
Certain Infectious and Parasitic Diseases
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code A53?
ICD-10-CM code A53 represents Other and unspecified syphilis. It is a non-billable header code requiring a more specific subcategory in the Certain Infectious and Parasitic Diseases chapter, effective October 1, 2025 – September 30, 2026.
Is A53 billable?
No. A53 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is A53 in?
A53 belongs to the Certain Infectious and Parasitic Diseases chapter (A00–B99) of ICD-10-CM.
Related codes in the A53 category
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