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A52.01

Syphilitic aneurysm of aorta

Billable FY2026 2025-10-01 → 2026-09-30
Exclusions 8 never code together
A50-A64block
Excludes1
  • nonspecific and nongonococcal urethritis (N34.1)N34.1
  • Reiter's disease (M02.3-)M02.3-
Excludes2
  • human immunodeficiency virus [HIV] disease (B20)B20
A00-B99chapter
Excludes1
  • certain localized infections - see body system-related chapters
Excludes2
  • carrier or suspected carrier of infectious disease (Z22.-)Z22.-
  • infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)O98.-
  • infectious and parasitic diseases specific to the perinatal period (P35-P39)P35-P39
  • influenza and other acute respiratory infections (J00-J22)J00-J22

Excludes1 — never code together. The excluded condition and this one are mutually exclusive.

Excludes2 — not included here, but the patient may have both. Code both when documented.

Instructional notes 2
A00-B99chapter
Includes
  • diseases generally recognized as communicable or transmissible
Use additional code
  • code to identify resistance to antimicrobial drugs (Z16.-)Z16.-
Index entries leading here 4
  • Aneurysm (anastomotic) (artery) (cirsoid) (diffuse) (false) (fusiform) (multiple) (saccular) I72.9
    • abdominal (aorta) I71.40
    • syphilitic (aorta) A52.01
    • thoracoabdominal (aorta) I71.60
    • thorax, thoracic (aorta) (arch) (nonsyphilitic) — see Aneurysm, aorta, thorax
    • aorta, aortic (nonsyphilitic) I71.9
    • cylindroid (aorta) I71.9
    • intrathoracic (nonsyphilitic) I71.20
  • Disease, diseased — see also Syndrome
  • Syphilis, syphilitic (acquired) A53.9
    • aortic (insufficiency) (regurgitation) (stenosis) A52.03
    • aorta (arch) (abdominal) (thoracic) A52.02
    • aneurysm (aorta) (ruptured) A52.01
    • dilatation, aorta A52.01
  • Rupture, ruptured
Alongside this code 7 same parent — A52.0
A52.00 Cardiovascular syphilis, unspecified A52.02 Syphilitic aortitis A52.03 Syphilitic endocarditis A52.04 Syphilitic cerebral arteritis A52.05 Other cerebrovascular syphilis A52.06 Other syphilitic heart involvement A52.09 Other cardiovascular syphilis
Additional references
AHA Coding Clinic® Licence required

Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.

Risk adjustment

Maps to no condition category in any loaded model.

Presence is a property of the code. Untick a model to hide it everywhere.

This code

Billable
yes
Code set
FY2026
Parent
A52.0
Block
A50-A64
Siblings
7

Present FY2024–FY2027.