I87.021 Postthrombotic syndrome with inflammation of right lower extremity

Billable ICD-10-CM code, FY2026.

Applies from I87.0 Postthrombotic syndrome

Applicable to

• Chronic venous hypertension due to deep vein thrombosis
• Postphlebitic syndrome

Excludes1 (never code together)

• chronic venous hypertension without deep vein thrombosis (I87.3-)

MS-DRG index

Defines the logic of DRG(s) 299-301 in MDC 05.

Approximate ICD-9-CM (GEMs)

• 459.12 Postphlebetic syndrome with inflammation (approximate)

Code annotations containing back-references to I87.021

Back-references to I87.0

• Type 1 Excludes: I87.3 Chronic venous hypertension (idiopathic) ("chronic venous hypertension due to deep vein thrombosis (I87.0-)")

Nearby codes

• I87.011 Postthrombotic syndrome with ulcer of right lower extremity
• I87.012 Postthrombotic syndrome with ulcer of left lower extremity
• I87.013 Postthrombotic syndrome with ulcer of bilateral lower extremity
• I87.019 Postthrombotic syndrome with ulcer of unspecified lower extremity
• I87.02 Postthrombotic syndrome with inflammation
• I87.021 Postthrombotic syndrome with inflammation of right lower extremity (this code)
• I87.022 Postthrombotic syndrome with inflammation of left lower extremity
• I87.023 Postthrombotic syndrome with inflammation of bilateral lower extremity
• I87.029 Postthrombotic syndrome with inflammation of unspecified lower extremity
• I87.03 Postthrombotic syndrome with ulcer and inflammation
• I87.031 Postthrombotic syndrome with ulcer and inflammation of right lower extremity