October 1 update. Our PDGM and ICD-10 tools now use the FY2027 code set: 190 codes added, 30 deleted, and no existing code changed clinical group.

See what changed

ICD-10 · PDGM grouping

A52 Late syphilis

All 30 codes in the A52 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.

ICD-10-CM FY2027 · CMS grouper v07.2.26

Codes in family

30

Can lead a claim

30

Cannot lead a claim

0

What CMS assigns to A52

All 30 codes group to MMTA - Infectious Disease, Neoplasms, and Blood-Forming Diseases (19), Neuro Rehabilitation (10) and Musculoskeletal Rehabilitation (1). None of the 30 is assigned a comorbidity subgroup. Every code can lead a claim.

Every code in A52

Descriptions are CDC’s FY2027 wording; where CMS’s grouper abbreviates one, its form is shown beneath.

CodeDescriptionPrimary positionClinical groupComorbidity subgroup
A52.0 Cardiovascular and cerebrovascular syphilis
A52.00Cardiovascular syphilis, unspecifiedCan lead a claimKNone
A52.01Syphilitic aneurysm of aortaCan lead a claimKNone
A52.02Syphilitic aortitisCan lead a claimKNone
A52.03Syphilitic endocarditisCan lead a claimKNone
A52.04Syphilitic cerebral arteritisCan lead a claimKNone
A52.05Other cerebrovascular syphilisCan lead a claimKNone
A52.06Other syphilitic heart involvementCan lead a claimKNone
A52.09Other cardiovascular syphilisCan lead a claimKNone
A52.1 Symptomatic neurosyphilis
A52.10Symptomatic neurosyphilis, unspecifiedCan lead a claimBNone
A52.11Tabes dorsalisCan lead a claimBNone
A52.12Other cerebrospinal syphilisCan lead a claimBNone
A52.13Late syphilitic meningitisCan lead a claimBNone
A52.14Late syphilitic encephalitisCan lead a claimBNone
A52.15Late syphilitic neuropathyCan lead a claimBNone
A52.16Charcot's arthropathy (tabetic)Can lead a claimENone
A52.17General paresisCan lead a claimBNone
A52.19Other symptomatic neurosyphilisCan lead a claimBNone
A52.2Asymptomatic neurosyphilisCan lead a claimBNone
A52.3Neurosyphilis, unspecifiedCan lead a claimBNone
A52.7 Other symptomatic late syphilis
A52.71Late syphilitic oculopathyCan lead a claimKNone
A52.72Syphilis of lung and bronchusCan lead a claimKNone
A52.73Symptomatic late syphilis of other respiratory organsCan lead a claimKNone
A52.74Syphilis of liver and other visceraCan lead a claimKNone
A52.75Syphilis of kidney and ureterCan lead a claimKNone
A52.76Other genitourinary symptomatic late syphilisCan lead a claimKNone
A52.77Syphilis of bone and jointCan lead a claimKNone
A52.78Syphilis of other musculoskeletal tissueCan lead a claimKNone
A52.79Other symptomatic late syphilisCan lead a claimKNone
A52.8Late syphilis, latentCan lead a claimKNone
A52.9Late syphilis, unspecifiedCan lead a claimKNone

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.

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