ICD-10 · PDGM grouping
A50 Congenital syphilis
All 33 codes in the A50 family, with the PDGM clinical group, comorbidity subgroup and primary-position rule CMS assigns, read from the CMS grouper crosswalk v07.2.26 and the CDC FY2027 code file.
Codes in family
33
Can lead a claim
33
Cannot lead a claim
0
What CMS assigns to A50
All 33 codes group to MMTA - Infectious Disease, Neoplasms, and Blood-Forming Diseases (27) and Neuro Rehabilitation (6). None of the 33 is assigned a comorbidity subgroup. Every code can lead a claim.
Every code in A50
Descriptions are CDC’s FY2027 wording; where CMS’s grouper abbreviates one, its form is shown beneath.
| Code | Description | Primary position | Clinical group | Comorbidity subgroup |
|---|---|---|---|---|
| A50.0 Early congenital syphilis, symptomatic | ||||
| A50.01 | Early congenital syphilitic oculopathy | Can lead a claim | K | None |
| A50.02 | Early congenital syphilitic osteochondropathy | Can lead a claim | K | None |
| A50.03 | Early congenital syphilitic pharyngitis | Can lead a claim | K | None |
| A50.04 | Early congenital syphilitic pneumonia | Can lead a claim | K | None |
| A50.05 | Early congenital syphilitic rhinitis | Can lead a claim | K | None |
| A50.06 | Early cutaneous congenital syphilis | Can lead a claim | K | None |
| A50.07 | Early mucocutaneous congenital syphilis | Can lead a claim | K | None |
| A50.08 | Early visceral congenital syphilis | Can lead a claim | K | None |
| A50.09 | Other early congenital syphilis, symptomatic | Can lead a claim | K | None |
| A50.1 | Early congenital syphilis, latent | Can lead a claim | K | None |
| A50.2 | Early congenital syphilis, unspecified | Can lead a claim | K | None |
| A50.3 Late congenital syphilitic oculopathy | ||||
| A50.30 | Late congenital syphilitic oculopathy, unspecified | Can lead a claim | K | None |
| A50.31 | Late congenital syphilitic interstitial keratitis | Can lead a claim | K | None |
| A50.32 | Late congenital syphilitic chorioretinitis | Can lead a claim | K | None |
| A50.39 | Other late congenital syphilitic oculopathy | Can lead a claim | K | None |
| A50.4 Late congenital neurosyphilis [juvenile neurosyphilis] | ||||
| A50.40 | Late congenital neurosyphilis, unspecified | Can lead a claim | B | None |
| A50.41 | Late congenital syphilitic meningitis | Can lead a claim | B | None |
| A50.42 | Late congenital syphilitic encephalitis | Can lead a claim | B | None |
| A50.43 | Late congenital syphilitic polyneuropathy | Can lead a claim | B | None |
| A50.44 | Late congenital syphilitic optic nerve atrophy | Can lead a claim | K | None |
| A50.45 | Juvenile general paresis | Can lead a claim | B | None |
| A50.49 | Other late congenital neurosyphilis | Can lead a claim | B | None |
| A50.5 Other late congenital syphilis, symptomatic | ||||
| A50.51 | Clutton's joints | Can lead a claim | K | None |
| A50.52 | Hutchinson's teeth | Can lead a claim | K | None |
| A50.53 | Hutchinson's triad | Can lead a claim | K | None |
| A50.54 | Late congenital cardiovascular syphilis | Can lead a claim | K | None |
| A50.55 | Late congenital syphilitic arthropathy | Can lead a claim | K | None |
| A50.56 | Late congenital syphilitic osteochondropathy | Can lead a claim | K | None |
| A50.57 | Syphilitic saddle nose | Can lead a claim | K | None |
| A50.59 | Other late congenital syphilis, symptomatic | Can lead a claim | K | None |
| A50.6 | Late congenital syphilis, latent | Can lead a claim | K | None |
| A50.7 | Late congenital syphilis, unspecified | Can lead a claim | K | None |
| A50.9 | Congenital syphilis, unspecified | Can lead a claim | K | None |
Sources: CMS HH PPS Grouper Software v07.2.26, effective 2026-10-01, for the clinical group, comorbidity subgroup, code-first conventions and primary-position flags; CDC NCHS ICD-10-CM FY2027 code descriptions for the family title and code wording. 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.
The monthly home health regs digest
What CMS changed, what's due next, and what to do about it — one email a month, no fluff. Read the first issue