I87.099 – Postthrombotic syndrome with other complications of unspecified lower extremity
ICD-10-CM 2027 diagnosis code · Diseases of veins, lymphatic vessels and lymph nodes, not elsewhere classified
- Code
I87.099(claims format:I87099)- Description
- Postthrombotic syndrome with other complications of unspecified lower extremity
- Short description
- Postthrom syndrome w oth complications of unsp low extrm
- Billable
- Yes – valid for HIPAA-covered transactions
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 9. Diseases of the circulatory system (I00-I99)
- Block
- I80-I89 Diseases of veins, lymphatic vessels and lymph nodes, not elsewhere classified
- Parent codes
- I87 › I87.0 › I87.09
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
I87.0 – Postthrombotic syndrome
- Chronic venous hypertension due to deep vein thrombosis
- Postphlebitic syndrome
- chronic venous hypertension without deep vein thrombosis (I87.3-)
Related codes in I87.09
Frequently asked questions
What is ICD-10 code I87.099?
I87.099 is the ICD-10-CM code for postthrombotic syndrome with other complications of unspecified lower extremity, in the block I80-I89 (Diseases of veins, lymphatic vessels and lymph nodes, not elsewhere classified).
Is I87.099 a billable code?
Yes. I87.099 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does I87.099 belong to?
It belongs to category I87 – Other disorders of veins.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.