A51
A51: Early syphilis
Non-billable headerICD-10-CM
A51 is a non-billable header ICD-10-CM code for early 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 A51
Their own Excludes1 notes name this code, so the conflict is not listed above.
- H20.0Acute and subacute iridocyclitis
- K77Liver disorders in diseases classified elsewhere
- L99Other disorders of skin and subcutaneous tissue in diseases classified elsewhere
- M63Disorders of muscle in diseases classified elsewhere
- M90Osteopathies in diseases classified elsewhere
- A52.79Other symptomatic late syphilis
- N77.0Ulceration of vulva in diseases classified elsewhere
- N77.1Vaginitis, vulvitis and vulvovaginitis in diseases classified elsewhere
Risk adjustment
No CMS-HCC V28 category: this code does not change a RAF score.
Code history
Unchanged in every release from FY2024 to FY2027.
Code to one of these instead A51
7 child codes. Green means billable.