A59
A59 — Trichomoniasis
Non-billable headerICD-10-CM
A59 is a non-billable header ICD-10-CM code for trichomoniasis. It cannot be billed on its own: choose one of the more specific child codes below.
Excludes2 — not included here, but may coexist
The excluded condition is not part of this code, but a patient can have both. You may code both.
- intestinal trichomoniasis (A07.8)
Other codes that can never be billed with A59
These codes carry an Excludes1 note pointing at A59. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading A59 alone.
- N33Bladder disorders in diseases classified elsewhere
- N37Urethral disorders in diseases classified elsewhere
- N51Disorders of male genital organs in diseases classified elsewhere
- N74Female pelvic inflammatory disorders in diseases classified elsewhere
- N77.1Vaginitis, vulvitis and vulvovaginitis in diseases classified elsewhere
- N89Other noninflammatory disorders of vagina
Risk adjustment
A59 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 to one of these instead A59
3 child codes. Green means billable.
Questions about A59
- Is A59 a billable ICD-10-CM code?
- No. A59 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does A59 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).