DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

A52 Late syphilis

  • Header · not billable

A52 is not billable. The category heads 30 billable codes in FY2027, grouped under 7 subdivisions.

Index → code

Where it sits

  1. Chapter 1 Certain infectious and parasitic diseases (A00-B99)
  2. A50-A64 Infections with a predominantly sexual mode of transmission (A50-A64)
  3. A52 Late syphilis
Billable codes
30
Subdivisions
7
CC / MCC codes
26 / 2
HCC V28 codes
0
New FY2027
0
Index entries
571

Codes in A52

  1. A52.0
    Cardiovascular and cerebrovascular syphilis
    Header
  2. A52.00
    Cardiovascular syphilis, unspecified
    BillableCC
  3. A52.01
    Syphilitic aneurysm of aorta
    BillableCC
  4. A52.02
    Syphilitic aortitis
    BillableCC
  5. A52.03
    Syphilitic endocarditis
    BillableCC
    Inclusion terms 3

    Inclusion terms

    • Syphilitic aortic valve incompetence or stenosis
    • Syphilitic mitral valve stenosis
    • Syphilitic pulmonary valve regurgitation
  6. A52.04
    Syphilitic cerebral arteritis
    BillableCC
  7. A52.05
    Other cerebrovascular syphilis
    BillableCC
    Inclusion terms 2

    Inclusion terms

    • Syphilitic cerebral aneurysm (ruptured) (non-ruptured)
    • Syphilitic cerebral thrombosis
  8. A52.06
    Other syphilitic heart involvement
    BillableCC
    Inclusion terms 3

    Inclusion terms

    • Syphilitic coronary artery disease
    • Syphilitic myocarditis
    • Syphilitic pericarditis
  9. A52.09
    Other cardiovascular syphilis
    BillableCC
  10. A52.1
    Symptomatic neurosyphilis
    Header
  11. A52.10
    Symptomatic neurosyphilis, unspecified
    BillableCC
  12. A52.11
    Tabes dorsalis
    BillableCC
    Inclusion terms 2

    Inclusion terms

    • Locomotor ataxia (progressive)
    • Tabetic neurosyphilis
  13. A52.12
    Other cerebrospinal syphilis
    BillableCC
  14. A52.13
    Late syphilitic meningitis
    BillableMCC
  15. A52.14
    Late syphilitic encephalitis
    BillableMCC
  16. A52.15
    Late syphilitic neuropathy
    BillableCC
    Inclusion terms 4

    Inclusion terms

    • Late syphilitic acoustic neuritis
    • Late syphilitic optic (nerve) atrophy
    • Late syphilitic polyneuropathy
    • Late syphilitic retrobulbar neuritis
  17. A52.16
    Charcôt's arthropathy (tabetic)
    BillableCC
  18. A52.17
    General paresis
    BillableCC
    Inclusion terms 1

    Inclusion terms

    • Dementia paralytica
  19. A52.19
    Other symptomatic neurosyphilis
    BillableCC
    Inclusion terms 1

    Inclusion terms

    • Syphilitic parkinsonism
  20. A52.2
    Asymptomatic neurosyphilis
    BillableCC
  21. A52.3
    Neurosyphilis, unspecified
    BillableCC
    Inclusion terms 3

    Inclusion terms

    • Gumma (syphilitic)
    • Syphilis (late)
    • Syphiloma
  22. A52.7
    Other symptomatic late syphilis
    Header
  23. A52.71
    Late syphilitic oculopathy
    BillableCC
    Inclusion terms 2

    Inclusion terms

    • Late syphilitic chorioretinitis
    • Late syphilitic episcleritis
  24. A52.72
    Syphilis of lung and bronchus
    BillableCC
  25. A52.73
    Symptomatic late syphilis of other respiratory organs
    BillableCC
  26. A52.74
    Syphilis of liver and other viscera
    BillableCC
    Inclusion terms 1

    Inclusion terms

    • Late syphilitic peritonitis
  27. A52.75
    Syphilis of kidney and ureter
    BillableCC
    Inclusion terms 1

    Inclusion terms

    • Syphilitic glomerular disease
  28. A52.76
    Other genitourinary symptomatic late syphilis
    BillableCC
    Inclusion terms 1

    Inclusion terms

    • Late syphilitic female pelvic inflammatory disease
  29. A52.77
    Syphilis of bone and joint
    BillableCC
  30. A52.78
    Syphilis of other musculoskeletal tissue
    BillableCC
    Inclusion terms 5

    Inclusion terms

    • Late syphilitic bursitis
    • Syphilis [stage unspecified] of bursa
    • Syphilis [stage unspecified] of muscle
    • Syphilis [stage unspecified] of synovium
    • Syphilis [stage unspecified] of tendon
  31. A52.79
    Other symptomatic late syphilis
    BillableCC
    Inclusion terms 5, Excludes1 1

    Inclusion terms

    • Late syphilitic leukoderma
    • Syphilis of adrenal gland
    • Syphilis of pituitary gland
    • Syphilis of thyroid gland
    • Syphilitic splenomegaly

    Excludes1

    • syphilitic leukoderma (secondary) (A51.39) A51.39
  32. A52.8
    Late syphilis, latent
    Billable
    Inclusion terms 1

    Inclusion terms

    • Syphilis (acquired) without clinical manifestations, with positive serological reaction and negative spinal fluid test, two years or more after infection
  33. A52.9
    Late syphilis, unspecified
    Billable

CC/MCC: as a secondary diagnosis, unless the principal diagnosis is on the code’s PDX exclusion list (MS-DRG v44 Appendix C; list on the code card).

Sources of each column.

Instructions

Notes that also apply

Block A50-A64 instructions (Excludes1 2, Excludes2 1): printed on the block page.

Chapter 1 instructions (Includes 1, Excludes2 5, Use additional code 1): printed on the chapter 1 page.

Index entries

  • Doehle-Heller aortitis → A52.02
  • Tabes, tabetic → A52.10
  • Pel's crisis → A52.11
  • Bayle's disease (general paresis) → A52.17
  • Lissauer's paralysis → A52.17
  • Taboparalysis → A52.17
  • Taboparesis (remission) → A52.17
  • Argyll Robertson phenomenon, pupil or syndrome (syphilitic) → A52.19
  • Neurosyphilis (arrested) (early) (gumma) (late) (latent) (recurrent) (relapse) → A52.3
  • Hepar lobatum (syphilitic) → A52.74
  • Verneuil's disease (syphilitic bursitis) → A52.78
  • Babinski's syndrome → A52.79
  • Gumma (syphilitic) → A52.79
  • Syphiloma → A52.79
  • Syphilis, syphilitic (acquired)cardiovascular → A52.00
  • Syphilis, syphilitic (acquired)vascular → A52.00
  • Syphilomacardiovascular system → A52.00
  • Syphilomacirculatory system → A52.00
  • Aneurysm (anastomotic) (artery) (cirsoid) (diffuse) (false) (fusiform) (multiple) (saccular)syphilitic (aorta) → A52.01
  • Syphilis, syphilitic (acquired)aneurysm (aorta) (ruptured) → A52.01
  • Syphilis, syphilitic (acquired)dilatation, aorta → A52.01
  • Aortitis (nonsyphilitic) (calcific)Doehle-Heller → A52.02
  • Aortitis (nonsyphilitic) (calcific)luetic → A52.02
  • Aortitis (nonsyphilitic) (calcific)specific (syphilitic) → A52.02
  • Aortitis (nonsyphilitic) (calcific)syphilitic → A52.02
  • Syphilis, syphilitic (acquired)aorta (arch) (abdominal) (thoracic) → A52.02
  • Endocarditis (chronic) (marantic) (nonbacterial) (thrombotic) (valvular)syphilitic → A52.03
  • Syphilis, syphilitic (acquired)aortic (insufficiency) (regurgitation) (stenosis) → A52.03
  • Syphilis, syphilitic (acquired)endocarditis → A52.03
  • Syphilis, syphilitic (acquired)mitral stenosis → A52.03
  • Syphilis, syphilitic (acquired)valvulitis NEC → A52.03
  • Neurosyphilis (arrested) (early) (gumma) (late) (latent) (recurrent) (relapse)arteritis (any artery) (cerebral) → A52.04
  • Aneurysm (anastomotic) (artery) (cirsoid) (diffuse) (false) (fusiform) (multiple) (saccular)central nervous system, syphilitic → A52.05
  • Angiopathia, angiopathyretinae syphilitica → A52.05
  • Neurosyphilis (arrested) (early) (gumma) (late) (latent) (recurrent) (relapse)aneurysm (cerebral) → A52.05
  • Neurosyphilis (arrested) (early) (gumma) (late) (latent) (recurrent) (relapse)hemorrhagic → A52.05
  • Neurosyphilis (arrested) (early) (gumma) (late) (latent) (recurrent) (relapse)thrombosis (cerebral) → A52.05
  • Neurosyphilis (arrested) (early) (gumma) (late) (latent) (recurrent) (relapse)vascular (cerebral) NEC → A52.05
  • Syphilis, syphilitic (acquired)cerebrovascular → A52.05
  • Gumma (syphilitic)heart → A52.06

531 more, longer entries are not listed; the search box finds them by word.

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