What does ICD-10 code I87.09 mean?

ICD-10 code I87.09 is the standardized code used for postthrombotic syndrome with other complications in medical records and coding systems.

When is ICD-10 code I87.09 used?

Doctors, hospitals, and insurers may use ICD-10 code I87.09 when recording postthrombotic syndrome with other complications in a standardized format. This entry may also act as a broader category that points toward more specific child codes.

Does ICD-10 code I87.09 confirm a diagnosis?

No. A code helps standardize documentation and claims, but it should not be read as a substitute for a clinician's full assessment.

ICD10

ICD-10 Code I87.09: Postthrombotic syndrome with other complications

Name: ICD-10 Code I87.09: Postthrombotic syndrome with other complications
Creator: HealthAssure Clinical Team
Published: 2026-05-21T06:14:23.088Z

I87.09 is an ICD-10 diagnosis entry used to group records related to Postthrombotic syndrome with other complications. 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. 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).

Reviewed by HealthAssure Clinical TeamUpdated 21 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 with other complications 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

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

Sibling codes

I87.00Postthrombotic syndrome without complications I87.01Postthrombotic syndrome with ulcer I87.02Postthrombotic syndrome with inflammation I87.03Postthrombotic syndrome with ulcer and inflammation

Coding guidelines

Common synonyms

Postthrombotic syndrome with other complications

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.