Block · Chapter 1
A50-A64 Infections with a predominantly sexual mode of transmission (A50-A64)
Block A50-A64 groups 13 categories with 142 billable codes in FY2027.
Where it sits
- Chapter 1 Certain infectious and parasitic diseases (A00-B99)
- A50-A64 Infections with a predominantly sexual mode of transmission (A50-A64)
Neighbouring blocks
- Categories
- 13
- Billable codes
- 142
- CC codes
- 89
- MCC codes
- 7
- HCC V28 codes
- 8
- New FY2027
- 0
Categories in A50-A64
Index main terms
- Syphilis, syphilitic (acquired) → A50, A51, A52, A53 (414 entries)
- Gonococcus, gonococcal (disease) (infection) → A54 (38 entries)
- Disease, diseased → A50, A51, A52, A54, A55, A56, A57, A58, A63, A64 (37 entries)
- Gumma (syphilitic) → A50, A52 (35 entries)
- Neurosyphilis (arrested) (early) (gumma) (late) (latent) (recurrent) (relapse) → A50, A52 (28 entries)
- Gonorrhea (acute) (chronic) → A54 (24 entries)
- Infection, infected, infective (opportunistic) → A55, A56, A57, A59, A63 (21 entries)
- Tabes, tabetic → A50, A52 (21 entries)
- Aneurysm (anastomotic) (artery) (cirsoid) (diffuse) (false) (fusiform) (multiple) (saccular) → A50, A52 (20 entries)
- Herpes, herpesvirus, herpetic → A60 (18 entries)
- Stricture → A50, A52, A54, A55 (18 entries)
- Chancre (any genital site) (hard) (hunterian) (mixed) (primary) (seronegative) (seropositive) (syphilitic) → A50, A51, A57 (17 entries)
- Bubo → A50, A51, A54, A55, A57 (13 entries)
- Chlamydia, chlamydial → A56 (13 entries)
- Paralysis, paralytic (complete) (incomplete) → A50, A52 (13 entries)
+233 more main terms; the search box finds them by word.
Block instructions
Excludes2
- human immunodeficiency virus [HIV] disease (B20) B20
Notes that also apply
Chapter 1 instructions (Includes 1, Excludes2 5, Use additional code 1): printed on the chapter 1 page.