DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

I74 Arterial embolism and thrombosis

  • Header · not billable

I74 is not billable. The category heads 11 billable codes in FY2027, grouped under 8 subdivisions.

Index → code

  • Embolism (multiple) (paradoxical) → I74.9
  • Leriche's syndrome (aortic bifurcation occlusion) → I74.09
  • Clot (blood)circulation → I74.9
Billable codes
11
Subdivisions
8
CC / MCC codes
10 / 1
HCC V28 codes
11
New FY2027
0
Index entries
57

Codes in I74

  1. I74.0
    Embolism and thrombosis of abdominal aorta
    Header
  2. I74.01
    Saddle embolus of abdominal aorta
    BillableMCC264
  3. I74.09
    Other arterial embolism and thrombosis of abdominal aorta
    BillableCC264
    Inclusion terms 3

    Inclusion terms

    • Aortic bifurcation syndrome
    • Aortoiliac obstruction
    • Leriche's syndrome
  4. I74.1
    Embolism and thrombosis of other and unspecified parts of aorta
    Header
  5. I74.10
    Embolism and thrombosis of unspecified parts of aorta
    BillableCC264
  6. I74.11
    Embolism and thrombosis of thoracic aorta
    BillableCC264
  7. I74.19
    Embolism and thrombosis of other parts of aorta
    BillableCC264
  8. I74.2
    Embolism and thrombosis of arteries of the upper extremities
    BillableCC264
  9. I74.3
    Embolism and thrombosis of arteries of the lower extremities
    BillableCC264
  10. I74.4
    Embolism and thrombosis of arteries of extremities, unspecified
    BillableCC264
    Inclusion terms 1

    Inclusion terms

    • Peripheral arterial embolism NOS
  11. I74.5
    Embolism and thrombosis of iliac artery
    BillableCC264
  12. I74.8
    Embolism and thrombosis of other arteries
    BillableCC264
  13. I74.9
    Embolism and thrombosis of unspecified artery
    BillableCC264

CC/MCC: as a secondary diagnosis, unless the principal diagnosis is on the code’s PDX exclusion list (MS-DRG v44 Appendix C; list on the code card).

Sources of each column.

Instructions

At I74

Includes

  • embolic infarction
  • embolic occlusion
  • thrombotic infarction
  • thrombotic occlusion

Excludes2

  • atheroembolism (I75.-) I75
  • basilar embolism and thrombosis (I63.0-I63.2, I65.1) I63.0 I63.2 I65.1
  • carotid embolism and thrombosis (I63.0-I63.2, I65.2) I63.0 I63.2 I65.2
  • cerebral embolism and thrombosis (I63.3-I63.5, I66.-) I63.3 I63.5 I66
  • coronary embolism and thrombosis (I21-I25) I21 I25
  • mesenteric embolism and thrombosis (K55.0-) K55.0
  • ophthalmic embolism and thrombosis (H34.-) H34
  • precerebral embolism and thrombosis NOS (I63.0-I63.2, I65.9) I63.0 I63.2 I65.9
  • pulmonary embolism and thrombosis (I26.-) I26
  • renal embolism and thrombosis (N28.0) N28.0
  • retinal embolism and thrombosis (H34.-) H34
  • septic embolism and thrombosis (I76) I76
  • vertebral embolism and thrombosis (I63.0-I63.2, I65.0) I63.0 I63.2 I65.0

Code first

  • embolism and thrombosis complicating abortion or ectopic or molar pregnancy (O00-O07, O08.2) O00 O07 O08.2
  • embolism and thrombosis complicating pregnancy, childbirth and the puerperium (O88.-) O88

Notes that also apply

Chapter 9 instructions (Excludes2 10): printed on the chapter 9 page.

Index entries

  • Leriche's syndrome (aortic bifurcation occlusion) → I74.09
  • Embolism (multiple) (paradoxical) → I74.9
  • Obstruction, obstructed, obstructiveaortoiliac → I74.09
  • Occlusion, occludedaortoiliac (chronic) → I74.09
  • Embolism (multiple) (paradoxical)aorta, aortic → I74.10
  • Thrombosis, thrombotic (bland) (multiple) (progressive) (silent) (vessel)aorta, aortic → I74.10
  • Embolism (multiple) (paradoxical)upper extremity → I74.2
  • Embolism (multiple) (paradoxical)popliteal (artery) → I74.3
  • Embolism (multiple) (paradoxical)peripheral artery NOS → I74.4
  • Thrombosis, thrombotic (bland) (multiple) (progressive) (silent) (vessel)peripheral arteries → I74.4
  • Obstruction, obstructed, obstructiveiliofemoral (artery) → I74.5
  • Occlusion, occludediliac artery → I74.5
  • Embolism (multiple) (paradoxical)spleen, splenic (artery) → I74.8
  • Clot (blood)circulation → I74.9
  • Embolism (multiple) (paradoxical)artery → I74.9
  • Thrombosis, thrombotic (bland) (multiple) (progressive) (silent) (vessel)artery, arteries (postinfectional) → I74.9
  • Embolism (multiple) (paradoxical)aorta, aorticsaddle → I74.01
  • Embolism (multiple) (paradoxical)saddleabdominal aorta → I74.01
  • Saddleembolusabdominal aorta → I74.01
  • Thrombosis, thrombotic (bland) (multiple) (progressive) (silent) (vessel)aorta, aorticsaddle → I74.01
  • Embolism (multiple) (paradoxical)aorta, aorticabdominal → I74.09
  • Embolism (multiple) (paradoxical)aorta, aorticbifurcation → I74.09
  • Syndromeaorticbifurcation → I74.09
  • Thrombosis, thrombotic (bland) (multiple) (progressive) (silent) (vessel)aorta, aorticabdominal → I74.09
  • Thrombosis, thrombotic (bland) (multiple) (progressive) (silent) (vessel)aorta, aorticbifurcation → I74.09
  • Thrombosis, thrombotic (bland) (multiple) (progressive) (silent) (vessel)aorta, aorticterminal → I74.09
  • Embolism (multiple) (paradoxical)aorta, aorticthoracic → I74.11
  • Thrombosis, thrombotic (bland) (multiple) (progressive) (silent) (vessel)aorta, aorticthoracic → I74.11
  • Thrombosis, thrombotic (bland) (multiple) (progressive) (silent) (vessel)aorta, aorticspecified site NEC → I74.19
  • Embolism (multiple) (paradoxical)extremitiesupper → I74.2
  • Occlusion, occludedperipheral arteriesupper extremity → I74.2
  • Thrombosis, thrombotic (bland) (multiple) (progressive) (silent) (vessel)peripheral arteriesupper → I74.2
  • Embolism (multiple) (paradoxical)legarterial → I74.3
  • Thrombosis, thrombotic (bland) (multiple) (progressive) (silent) (vessel)legarterial → I74.3
  • Embolism (multiple) (paradoxical)arteryextremity → I74.4
  • Embolism (multiple) (paradoxical)arterylimb → I74.4
  • Embolism (multiple) (paradoxical)arteryperipheral → I74.4
  • Thrombosis, thrombotic (bland) (multiple) (progressive) (silent) (vessel)artery, arteries (postinfectional)limb → I74.4
  • Embolism (multiple) (paradoxical)arteryiliac → I74.5
  • Occlusion, occludedarteryiliac → I74.5

17 more, longer entries are not listed; the search box finds them by word.

NCHS Alphabetic Index. Index first, then the Tabular List.

Hierarchy