2020 ICD-10-CM Diagnosis Code I73.9

Peripheral vascular disease, unspecified

    2016 2017 2018 2019 2020 Billable/Specific Code
  • I73.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2020 edition of ICD-10-CM I73.9 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of I73.9 - other international versions of ICD-10 I73.9 may differ.
Applicable To
  • Intermittent claudication
  • Peripheral angiopathy NOS
  • Spasm of artery
Type 1 Excludes
Type 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as I73.9. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • atherosclerosis of the extremities (
    ICD-10-CM Diagnosis Code I70.2

    Atherosclerosis of native arteries of the extremities

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Applicable To
    • Mönckeberg's (medial) sclerosis
    Type 2 Excludes
    Use Additional
    • code, if applicable, to identify chronic total occlusion of artery of extremity (I70.92)
    I70.2-
    -
    ICD-10-CM Diagnosis Code I70.7

    Atherosclerosis of other type of bypass graft(s) of the extremities

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Use Additional
    • code, if applicable, to identify chronic total occlusion of artery of extremity (I70.92)
    I70.7-
    )
The following code(s) above I73.9 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to I73.9:
  • I00-I99
    2020 ICD-10-CM Range I00-I99

    Diseases of the circulatory system

    Type 2 Excludes
    • certain conditions originating in the perinatal period (P04-P96)
    • certain infectious and parasitic diseases (A00-B99)
    • complications of pregnancy, childbirth and the puerperium (O00-O9A)
    • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
    • endocrine, nutritional and metabolic diseases (E00-E88)
    • injury, poisoning and certain other consequences of external causes (S00-T88)
    • neoplasms (C00-D49)
    • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
    • systemic connective tissue disorders (M30-M36)
    • transient cerebral ischemic attacks and related syndromes (G45.-)
    Diseases of the circulatory system
  • I73
    ICD-10-CM Diagnosis Code I73

    Other peripheral vascular diseases

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 2 Excludes
    Other peripheral vascular diseases
Approximate Synonyms
  • Claudication due to peripheral vascular disease
  • Claudication in peripheral vascular disease
  • Gangrene due to peripheral vascular disease
  • Intermittent claudication
  • Pain at rest due to peripheral vascular disease
  • Peripheral arterial insufficiency
  • Peripheral arterial occlusive disease
  • Peripheral artery disease
  • Peripheral vascular disease
  • Peripheral vascular disease, rest pain
  • Posterior tibial artery insufficiency
  • Tissue necrosis in peripheral vascular disease
  • Vascular insufficiency of limb
Clinical Information
  • A symptom complex characterized by pain and weakness in skeletal muscle group associated with exercise, such as leg pain and weakness brought on by walking. Such muscle limpness disappears after a brief rest and is often relates to arterial stenosis; muscle ischemia; and accumulation of lactate.
  • Any disorder affecting blood flow through the veins or arteries outside of the heart.
  • Condition in which there is a deviation from or interruption of the normal structure or function of the blood vessels outside the heart; diseases of the peripheral as opposed to the cardiac circulation.
  • Pathological processes involving any one of the blood vessels in the vasculature outside the heart.
ICD-10-CM I73.9 is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):
  • 299 Peripheral vascular disorders with mcc
  • 300 Peripheral vascular disorders with cc
  • 301 Peripheral vascular disorders without cc/mcc

Convert I73.9 to ICD-9-CM

Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change

Diagnosis Index entries containing back-references to I73.9:
  • Angina (attack) (cardiac) (chest) (heart) (pectoris) (syndrome) (vasomotor) I20.9
    ICD-10-CM Diagnosis Code I20.9

    Angina pectoris, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Angina NOS
    • Anginal syndrome
    • Cardiac angina
    • Ischemic chest pain
    • cruris I73.9
  • Angiopathia, angiopathy I99.9
    ICD-10-CM Diagnosis Code I99.9

    Unspecified disorder of circulatory system

      2016 2017 2018 2019 2020 Billable/Specific Code
  • Angiospasm (peripheral) (traumatic) (vessel) I73.9
  • Angiospastic disease or edema I73.9
  • Arteriospasm I73.9
  • Change(s) (in) (of) - see also Removal
    • vasomotor I73.9
  • Charcot's
    • syndrome I73.9 (intermittent claudication)
  • Claudication (intermittent) I73.9
  • Dilatation
    • vasomotor I73.9
  • Disease, diseased - see also Syndrome
    • angiospastic I73.9
    • arterial I77.9
      ICD-10-CM Diagnosis Code I77.9

      Disorder of arteries and arterioles, unspecified

        2016 2017 2018 2019 2020 Billable/Specific Code
      • peripheral I73.9
    • artery I77.9
      ICD-10-CM Diagnosis Code I77.9

      Disorder of arteries and arterioles, unspecified

        2016 2017 2018 2019 2020 Billable/Specific Code
      • peripheral I73.9
    • peripheral
      • arterial I73.9
      • vascular NOS I73.9
    • vascular I99.9
      ICD-10-CM Diagnosis Code I99.9

      Unspecified disorder of circulatory system

        2016 2017 2018 2019 2020 Billable/Specific Code
      • obliterative I77.1
        ICD-10-CM Diagnosis Code I77.1

        Stricture of artery

          2016 2017 2018 2019 2020 Billable/Specific Code
        Applicable To
        • Narrowing of artery
        • peripheral I73.9
      • peripheral (occlusive) I73.9
    • small vessel I73.9
    • terminal vessel I73.9
    • vasomotor I73.9
    • vasospastic I73.9
  • Disturbance(s) - see also Disease
    • vasomotor I73.9
    • vasospastic I73.9
  • Dysbasia R26.2
    ICD-10-CM Diagnosis Code R26.2

    Difficulty in walking, not elsewhere classified

      2016 2017 2018 2019 2020 Billable/Specific Code
    Type 1 Excludes
    • angiosclerotica intermittens I73.9
  • Edema, edematous (infectious) (pitting) (toxic) R60.9
    ICD-10-CM Diagnosis Code R60.9

    Edema, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Fluid retention NOS
    • angiospastic I73.9
  • Insufficiency, insufficient
    • arterial I77.1
      ICD-10-CM Diagnosis Code I77.1

      Stricture of artery

        2016 2017 2018 2019 2020 Billable/Specific Code
      Applicable To
      • Narrowing of artery
      • peripheral I73.9
    • vascular I99.8
      ICD-10-CM Diagnosis Code I99.8

      Other disorder of circulatory system

        2016 2017 2018 2019 2020 Billable/Specific Code
      • peripheral I73.9
    • peripheral vascular I73.9 (arterial)
  • Labile
    • vasomotor system I73.9
  • Microangiopathy (peripheral) I73.9
  • Phenomenon
    • vasospastic I73.9
  • Reflex R29.2
    ICD-10-CM Diagnosis Code R29.2

    Abnormal reflex

      2016 2017 2018 2019 2020 Billable/Specific Code
    Type 2 Excludes
    • abnormal pupillary reflex (H57.0)
    • hyperactive gag reflex (J39.2)
    • vasovagal reaction or syncope (R55)
    • vasoconstriction I73.9
  • Spasm(s) R25.2
    - see also condition
    ICD-10-CM Diagnosis Code R25.2

    Cramp and spasm

      2016 2017 2018 2019 2020 Billable/Specific Code
    Type 2 Excludes
    • artery I73.9
    • vascular I73.9
    • vasomotor I73.9
  • Syndrome - see also Disease
    • Charcot's I73.9 (angina cruris) (intermittent claudication)
    • vasomotor I73.9
  • Vascular - see also condition
    • spasm I73.9
  • Vasodilation I73.9
  • Vasospasm (vasoconstriction) I73.9
    • peripheral NOS I73.9

ICD-10-CM Codes Adjacent To I73.9
I72.8 Aneurysm of other specified arteries
I72.9 Aneurysm of unspecified site
I73 Other peripheral vascular diseases
I73.0 Raynaud's syndrome
I73.00 …… without gangrene
I73.01 …… with gangrene
I73.1 Thromboangiitis obliterans [Buerger's disease]
I73.8 Other specified peripheral vascular diseases
I73.81 Erythromelalgia
I73.89 Other specified peripheral vascular diseases
I73.9 Peripheral vascular disease, unspecified
I74 Arterial embolism and thrombosis
I74.0 Embolism and thrombosis of abdominal aorta
I74.01 Saddle embolus of abdominal aorta
I74.09 Other arterial embolism and thrombosis of abdominal aorta
I74.1 Embolism and thrombosis of other and unspecified parts of aorta
I74.10 Embolism and thrombosis of unspecified parts of aorta
I74.11 Embolism and thrombosis of thoracic aorta
I74.19 Embolism and thrombosis of other parts of aorta
I74.2 Embolism and thrombosis of arteries of the upper extremities
I74.3 Embolism and thrombosis of arteries of the lower extremities

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.