A52
A52 — Late syphilis
Non-billable headerICD-10-CM
A52 is a non-billable header ICD-10-CM code for late syphilis. It cannot be billed on its own: choose one of the more specific child codes below.
Other codes that can never be billed with A52
These codes carry an Excludes1 note pointing at A52. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading A52 alone.
- E35Disorders of endocrine glands in diseases classified elsewhere
- A51.39Other secondary syphilis of skin
- G01Meningitis in bacterial diseases classified elsewhere
- G32.0Subacute combined degeneration of spinal cord in diseases classified elsewhere
- G53Cranial nerve disorders in diseases classified elsewhere
- G59Mononeuropathy in diseases classified elsewhere
- G94Other disorders of brain in diseases classified elsewhere
- G98.0Neurogenic arthritis, not elsewhere classified
Risk adjustment
A52 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Code history
A52 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.
Code to one of these instead A52
7 child codes. Green means billable.
Questions about A52
- Is A52 a billable ICD-10-CM code?
- No. A52 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does A52 sit in the tabular list?
- Certain infectious and parasitic diseases (A00-B99), in the block Infections with a predominantly sexual mode of transmission (A50-A64).