ICD-10 · PDGM grouping
A50-A64 — Infections with a predominantly sexual mode of transmission
Every ICD-10-CM code in this range and the PDGM clinical group CMS assigns to it, read from the CMS grouper crosswalk v07.1.26.
OASIS-E2 v1.00.0 · ingested 2026-04-26
Codes in range
142
No clinical group
1
A period cannot be grouped from these.
Barred as primary
0
CMS rejects these in the primary position.
Where these codes group
121 of the 142 codes in A50-A64 group to MMTA - Infectious Disease, Neoplasms, and Blood-Forming Diseases, but the range is not uniform — it spreads across 3 clinical groups. A further 1 are assigned no clinical group at all, which means a 30-day period cannot be grouped from them.
Every code in A50-A64
Descriptions are CMS’s own, abbreviated as CMS abbreviates them.
| Code | Description | Clinical group | Primary position |
|---|---|---|---|
| A5001 | Early congenital syphilitic oculopathy | K | Accepted |
| A5002 | Early congenital syphilitic osteochondropathy | K | Accepted |
| A5003 | Early congenital syphilitic pharyngitis | K | Accepted |
| A5004 | Early congenital syphilitic pneumonia | K | Accepted |
| A5005 | Early congenital syphilitic rhinitis | K | Accepted |
| A5006 | Early cutaneous congenital syphilis | K | Accepted |
| A5007 | Early mucocutaneous congenital syphilis | K | Accepted |
| A5008 | Early visceral congenital syphilis | K | Accepted |
| A5009 | Other early congenital syphilis, symptomatic | K | Accepted |
| A501 | Early congenital syphilis, latent | K | Accepted |
| A502 | Early congenital syphilis, unspecified | K | Accepted |
| A5030 | Late congenital syphilitic oculopathy, unspecified | K | Accepted |
| A5031 | Late congenital syphilitic interstitial keratitis | K | Accepted |
| A5032 | Late congenital syphilitic chorioretinitis | K | Accepted |
| A5039 | Other late congenital syphilitic oculopathy | K | Accepted |
| A5040 | Late congenital neurosyphilis, unspecified | B | Accepted |
| A5041 | Late congenital syphilitic meningitis | B | Accepted |
| A5042 | Late congenital syphilitic encephalitis | B | Accepted |
| A5043 | Late congenital syphilitic polyneuropathy | B | Accepted |
| A5044 | Late congenital syphilitic optic nerve atrophy | K | Accepted |
| A5045 | Juvenile general paresis | B | Accepted |
| A5049 | Other late congenital neurosyphilis | B | Accepted |
| A5051 | Clutton's joints | K | Accepted |
| A5052 | Hutchinson's teeth | K | Accepted |
| A5053 | Hutchinson's triad | K | Accepted |
| A5054 | Late congenital cardiovascular syphilis | K | Accepted |
| A5055 | Late congenital syphilitic arthropathy | K | Accepted |
| A5056 | Late congenital syphilitic osteochondropathy | K | Accepted |
| A5057 | Syphilitic saddle nose | K | Accepted |
| A5059 | Other late congenital syphilis, symptomatic | K | Accepted |
| A506 | Late congenital syphilis, latent | K | Accepted |
| A507 | Late congenital syphilis, unspecified | K | Accepted |
| A509 | Congenital syphilis, unspecified | K | Accepted |
| A510 | Primary genital syphilis | K | Accepted |
| A511 | Primary anal syphilis | K | Accepted |
| A512 | Primary syphilis of other sites | K | Accepted |
| A5131 | Condyloma latum | K | Accepted |
| A5132 | Syphilitic alopecia | K | Accepted |
| A5139 | Other secondary syphilis of skin | K | Accepted |
| A5141 | Secondary syphilitic meningitis | B | Accepted |
| A5142 | Secondary syphilitic female pelvic disease | K | Accepted |
| A5143 | Secondary syphilitic oculopathy | K | Accepted |
| A5144 | Secondary syphilitic nephritis | K | Accepted |
| A5145 | Secondary syphilitic hepatitis | K | Accepted |
| A5146 | Secondary syphilitic osteopathy | K | Accepted |
| A5149 | Other secondary syphilitic conditions | K | Accepted |
| A515 | Early syphilis, latent | K | Accepted |
| A519 | Early syphilis, unspecified | K | Accepted |
| A5200 | Cardiovascular syphilis, unspecified | K | Accepted |
| A5201 | Syphilitic aneurysm of aorta | K | Accepted |
| A5202 | Syphilitic aortitis | K | Accepted |
| A5203 | Syphilitic endocarditis | K | Accepted |
| A5204 | Syphilitic cerebral arteritis | K | Accepted |
| A5205 | Other cerebrovascular syphilis | K | Accepted |
| A5206 | Other syphilitic heart involvement | K | Accepted |
| A5209 | Other cardiovascular syphilis | K | Accepted |
| A5210 | Symptomatic neurosyphilis, unspecified | B | Accepted |
| A5211 | Tabes dorsalis | B | Accepted |
| A5212 | Other cerebrospinal syphilis | B | Accepted |
| A5213 | Late syphilitic meningitis | B | Accepted |
| A5214 | Late syphilitic encephalitis | B | Accepted |
| A5215 | Late syphilitic neuropathy | B | Accepted |
| A5216 | Charcot's arthropathy (tabetic) | E | Accepted |
| A5217 | General paresis | B | Accepted |
| A5219 | Other symptomatic neurosyphilis | B | Accepted |
| A522 | Asymptomatic neurosyphilis | B | Accepted |
| A523 | Neurosyphilis, unspecified | B | Accepted |
| A5271 | Late syphilitic oculopathy | K | Accepted |
| A5272 | Syphilis of lung and bronchus | K | Accepted |
| A5273 | Symptomatic late syphilis of other respiratory organs | K | Accepted |
| A5274 | Syphilis of liver and other viscera | K | Accepted |
| A5275 | Syphilis of kidney and ureter | K | Accepted |
| A5276 | Other genitourinary symptomatic late syphilis | K | Accepted |
| A5277 | Syphilis of bone and joint | K | Accepted |
| A5278 | Syphilis of other musculoskeletal tissue | K | Accepted |
| A5279 | Other symptomatic late syphilis | K | Accepted |
| A528 | Late syphilis, latent | K | Accepted |
| A529 | Late syphilis, unspecified | K | Accepted |
| A530 | Latent syphilis, unspecified as early or late | K | Accepted |
| A539 | Syphilis, unspecified | K | Accepted |
| A5400 | Gonococcal infection of lower genitourinary tract, unsp | K | Accepted |
| A5401 | Gonococcal cystitis and urethritis, unspecified | K | Accepted |
| A5402 | Gonococcal vulvovaginitis, unspecified | K | Accepted |
| A5403 | Gonococcal cervicitis, unspecified | K | Accepted |
| A5409 | Other gonococcal infection of lower genitourinary tract | K | Accepted |
| A541 | Gonocl infct of lower GU tract w periureth and acc glnd abcs | K | Accepted |
| A5421 | Gonococcal infection of kidney and ureter | K | Accepted |
| A5422 | Gonococcal prostatitis | K | Accepted |
| A5423 | Gonococcal infection of other male genital organs | K | Accepted |
| A5424 | Gonococcal female pelvic inflammatory disease | K | Accepted |
| A5429 | Other gonococcal genitourinary infections | K | Accepted |
| A5430 | Gonococcal infection of eye, unspecified | K | Accepted |
| A5431 | Gonococcal conjunctivitis | K | Accepted |
| A5432 | Gonococcal iridocyclitis | K | Accepted |
| A5433 | Gonococcal keratitis | K | Accepted |
| A5439 | Other gonococcal eye infection | K | Accepted |
| A5440 | Gonococcal infection of musculoskeletal system, unspecified | K | Accepted |
| A5441 | Gonococcal spondylopathy | K | Accepted |
| A5442 | Gonococcal arthritis | E | Accepted |
| A5443 | Gonococcal osteomyelitis | K | Accepted |
| A5449 | Gonococcal infection of other musculoskeletal tissue | K | Accepted |
| A545 | Gonococcal pharyngitis | K | Accepted |
| A546 | Gonococcal infection of anus and rectum | K | Accepted |
| A5481 | Gonococcal meningitis | B | Accepted |
| A5482 | Gonococcal brain abscess | K | Accepted |
| A5483 | Gonococcal heart infection | K | Accepted |
| A5484 | Gonococcal pneumonia | K | Accepted |
| A5485 | Gonococcal peritonitis | K | Accepted |
| A5486 | Gonococcal sepsis | K | Accepted |
| A5489 | Other gonococcal infections | K | Accepted |
| A549 | Gonococcal infection, unspecified | K | Accepted |
| A55 | Chlamydial lymphogranuloma (venereum) | K | Accepted |
| A5600 | Chlamydial infection of lower genitourinary tract, unsp | K | Accepted |
| A5601 | Chlamydial cystitis and urethritis | K | Accepted |
| A5602 | Chlamydial vulvovaginitis | K | Accepted |
| A5609 | Other chlamydial infection of lower genitourinary tract | K | Accepted |
| A5611 | Chlamydial female pelvic inflammatory disease | K | Accepted |
| A5619 | Other chlamydial genitourinary infection | K | Accepted |
| A562 | Chlamydial infection of genitourinary tract, unspecified | K | Accepted |
| A563 | Chlamydial infection of anus and rectum | K | Accepted |
| A564 | Chlamydial infection of pharynx | K | Accepted |
| A568 | Sexually transmitted chlamydial infection of other sites | K | Accepted |
| A57 | Chancroid | K | Accepted |
| A58 | Granuloma inguinale | K | Accepted |
| A5900 | Urogenital trichomoniasis, unspecified | K | Accepted |
| A5901 | Trichomonal vulvovaginitis | K | Accepted |
| A5902 | Trichomonal prostatitis | K | Accepted |
| A5903 | Trichomonal cystitis and urethritis | K | Accepted |
| A5909 | Other urogenital trichomoniasis | K | Accepted |
| A598 | Trichomoniasis of other sites | K | Accepted |
| A599 | Trichomoniasis, unspecified | K | Accepted |
| A6000 | Herpesviral infection of urogenital system, unspecified | K | Accepted |
| A6001 | Herpesviral infection of penis | K | Accepted |
| A6002 | Herpesviral infection of other male genital organs | K | Accepted |
| A6003 | Herpesviral cervicitis | K | Accepted |
| A6004 | Herpesviral vulvovaginitis | K | Accepted |
| A6009 | Herpesviral infection of other urogenital tract | K | Accepted |
| A601 | Herpesviral infection of perianal skin and rectum | K | Accepted |
| A609 | Anogenital herpesviral infection, unspecified | K | Accepted |
| A630 | Anogenital (venereal) warts | K | Accepted |
| A638 | Other specified predominantly sexually transmitted diseases | K | Accepted |
| A64 | Unspecified sexually transmitted disease | None | Cannot group |
Source: CMS HH PPS Grouper Software v07.1.26, effective 2026-04-01. This is the crosswalk Medicare runs a claim through. Grouping also depends on admission source, timing, the OASIS functional items and the rest of the diagnosis list.
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