Diseases of the Circulatory System
ICD-10 Code: I73.9
Peripheral Vascular Disease, Unspecified
Disease of blood vessels outside the heart and brain, commonly affecting legs.
Clinical Information
Disease of blood vessels outside the heart and brain, commonly affecting legs. Common in US healthcare settings with specific coding requirements per ICD-10-CM guidelines.
Coding Guidelines
- 1Use I73.9 when clinical documentation supports this diagnosis
- 2Verify specificity requirements per ICD-10-CM Official Guidelines
- 3Code to highest level of specificity documented
- 4Consider associated conditions and combination coding rules
Common Uses
- Primary diagnosis in ambulatory settings
- Secondary diagnosis in inpatient settings
- ED/urgent care encounters
- Follow-up and monitoring visits
Related ICD-10 Codes
I73.XRelated code in same category
See ICD-10-CM manualFor complete related code list
Documentation Requirements
- Physician documentation must clearly state diagnosis
- Include severity, laterality, and specificity when applicable
- Document underlying cause if known
- Note acute vs. chronic where relevant
Real-World Coding Examples
Patient presents with peripheral vascular disease, unspecified. Clinical findings support I73.9 diagnosis.
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