ICD10
ICD-10 Code I87.0: Postthrombotic syndrome
Reviewed by HealthAssure Clinical TeamUpdated 26 May 2026
What is this code?
ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for Diseases of the circulatory system (I00-I99).
When is it used?
- May be used when a clinician documents postthrombotic syndrome in a patient's medical record.
- May appear in hospital records, claims, referrals, and clinical documentation.
- This code may act more like a grouping or parent code, so a more specific child code may be used in final documentation when available.
What it does not mean
- A code alone does not explain severity, treatment plan, or outcome.
- A medical code should not be treated as a substitute for a doctor's diagnosis or advice.
- This entry may represent a broader category rather than the most specific billable code.
Code hierarchy
chapter
9Diseases of the circulatory system (I00-I99)
block
I80-I89Diseases of veins, lymphatic vessels and lymph nodes, not elsewhere classified
category
I87Other disorders of veins
currentI87
Official coding notes
Inclusion terms
- Chronic venous hypertension due to deep vein thrombosis
- Postphlebitic syndrome
Excludes1 (do not code together)
- chronic venous hypertension without deep vein thrombosis (I87.3-)
Where you may see this code
You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen.
Related specialists
CardiologistGeneral Physician
Related codes
Sibling codes
Mapped diagnoses and classifications
SNOMED_CT 410013001high
Post-phlebitic dermatosis of lower leg
Source: SNOMED International ICD-10 map
SNOMED_CT 410017000high
Post-phlebitic lipodermatosclerosis
Source: SNOMED International ICD-10 map
SNOMED_CT 20427003high
Postthrombotic syndrome
Source: SNOMED International ICD-10 map
SNOMED_CT 15948101000119108high
Left calf ulcer due to post thrombotic syndrome
Source: SNOMED International ICD-10 map
SNOMED_CT 15948621000119105high
Left foot ulcer due to post thrombotic syndrome
Source: SNOMED International ICD-10 map
SNOMED_CT 15948301000119106high
Right calf ulcer due to post thrombotic syndrome
Source: SNOMED International ICD-10 map
Coding guidelines
Compatibility
Legacy code aligns to an official FY 2026 category. Frontend should resolve to the official category page and surface the billable child codes.
Legacy codes
I87.0
Common synonyms
Postthrombotic syndrome
Frequently asked questions
About this content
This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.