I82.221 Chronic embolism and thrombosis of inferior vena cava

Billable ICD-10-CM code, FY2026. Acts as a Major Complication or Comorbidity (MCC) as a secondary diagnosis.

Applies from I82 Other venous embolism and thrombosis

Excludes2 (not included here)

• venous embolism and thrombosis (of):
• cerebral (I63.6, I67.6)
• coronary (I21-I25)
• intracranial and intraspinal, septic or NOS (G08)
• intracranial, nonpyogenic (I67.6)
• intraspinal, nonpyogenic (G95.1)
• mesenteric (K55.0-)
• portal (I81)
• pulmonary (I26.-)

Code first

• venous embolism and thrombosis complicating:
• abortion, ectopic or molar pregnancy (O00-O07, O08.7)
• pregnancy, childbirth and the puerperium (O22.-, O87.-)

Risk adjustment (HCC)

• CMS-HCC V28: HCC 267 — Deep Vein Thrombosis and Pulmonary Embolism
• CMS-HCC V22: HCC 108 — Vascular Disease
• RxHCC V08: HCC 215 — Venous Thromboembolism
• ESRD V24: HCC 108

MS-DRG index

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

Approximate ICD-9-CM (GEMs)

• 453.2 Other venous embolism and thrombosis of inferior vena cava (approximate)

Diagnosis Index entries for I82.221

• Embolism (multiple) (paradoxical) › vena cava › inferior (acute) › chronic
• Thrombosis, thrombotic (bland) (multiple) (progressive) (silent) (vessel) › vena cava › inferior › chronic

Nearby codes

• I82.21 Embolism and thrombosis of superior vena cava
• I82.210 Acute embolism and thrombosis of superior vena cava
• I82.211 Chronic embolism and thrombosis of superior vena cava
• I82.22 Embolism and thrombosis of inferior vena cava
• I82.220 Acute embolism and thrombosis of inferior vena cava
• I82.221 Chronic embolism and thrombosis of inferior vena cava (this code)
• I82.29 Embolism and thrombosis of other thoracic veins
• I82.290 Acute embolism and thrombosis of other thoracic veins
• I82.291 Chronic embolism and thrombosis of other thoracic veins
• I82.3 Embolism and thrombosis of renal vein
• I82.4 Acute embolism and thrombosis of deep veins of lower extremity