DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

I73 Other peripheral vascular diseases

  • Header · not billable

I73 is not billable. The category heads 6 billable codes in FY2027, grouped under 4 subdivisions.

Index → code

Where it sits

  1. Chapter 9 Diseases of the circulatory system (I00-I99)
  2. I70-I79 Diseases of arteries, arterioles and capillaries (I70-I79)
  3. I73 Other peripheral vascular diseases
Billable codes
6
Subdivisions
4
CC / MCC codes
1 / 0
HCC V28 codes
1
New FY2027
0
Index entries
77

Codes in I73

  1. I73.0
    Raynaud's syndrome
    Header
    Inclusion terms 2

    Inclusion terms

    • Raynaud's disease
    • Raynaud's phenomenon (secondary)
  2. I73.00
    Raynaud's syndrome without gangrene
    Billable
  3. I73.01
    Raynaud's syndrome with gangrene
    BillableCC263
  4. I73.1
    Thromboangiitis obliterans [Buerger's disease]
    Billable
  5. I73.8
    Other specified peripheral vascular diseases
    Header
    Excludes1 1

    Excludes1

    • diabetic (peripheral) angiopathy (E08-E13 with .51-.52) E08 E13
  6. I73.81
    Erythromelalgia
    Billable
  7. I73.89
    Other specified peripheral vascular diseases
    Billable
    Inclusion terms 4

    Inclusion terms

    • Acrocyanosis
    • Erythrocyanosis
    • Simple acroparesthesia [Schultze's type]
    • Vasomotor acroparesthesia [Nothnagel's type]
  8. I73.9
    Peripheral vascular disease, unspecified
    Billable
    Inclusion terms 3, Excludes1 1

    Inclusion terms

    • Intermittent claudication
    • Peripheral angiopathy NOS
    • Spasm of artery

    Excludes1

    • atherosclerosis of the extremities (I70.2--I70.7-) I70.2 I70.7

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 I73

Excludes2

  • chilblains (T69.1) T69.1
  • frostbite (T33-T34) T33 T34
  • immersion hand or foot (T69.0-) T69.0
  • spasm of cerebral artery (G45.9) G45.9

Notes that also apply

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

Index entries

  • Raynaud's disease, phenomenon or syndrome (secondary) → I73.00
  • Buerger's disease (thromboangiitis obliterans) → I73.1
  • Thromboangiitis → I73.1
  • Acromelalgia → I73.81
  • Erythermalgia (primary) → I73.81
  • Erythralgia → I73.81
  • Erythromelalgia → I73.81
  • Mitchell's disease (erythromelalgia) → I73.81
  • Weir Mitchell's disease → I73.81
  • Acroasphyxia, chronic → I73.89
  • Acrocyanosis → I73.89
  • Acroparesthesia (simple) (vasomotor) → I73.89
  • Crocq's disease (acrocyanosis) → I73.89
  • Erythrocyanosis (crurum) → I73.89
  • Schultze's type acroparesthesia, simple → I73.89
  • Angiospasm (peripheral) (traumatic) (vessel) → I73.9
  • Angiospastic disease or edema → I73.9
  • Arteriospasm → I73.9
  • Claudication (intermittent) → I73.9
  • Microangiopathy (peripheral) → I73.9
  • Vasodilation → I73.9
  • Vasospasm (vasoconstriction) → I73.9
  • Asphyxia, asphyxiation (by)local → I73.00
  • PhenomenonRaynaud's (secondary) → I73.00
  • SyndromeRaynaud's → I73.00
  • Gangrene, gangrenous (connective tissue) (dropsical) (dry) (moist) (skin) (ulcer)Raynaud's (symmetric gangrene) → I73.01
  • Gangrene, gangrenous (connective tissue) (dropsical) (dry) (moist) (skin) (ulcer)symmetrical → I73.01
  • Raynaud's disease, phenomenon or syndrome (secondary)with gangrene (symmetric) → I73.01
  • Disease, diseasedBuerger's (thromboangiitis obliterans) → I73.1
  • Gangrene, gangrenous (connective tissue) (dropsical) (dry) (moist) (skin) (ulcer)presenile → I73.1
  • Thromboangiitisobliterans (general) → I73.1
  • Disease, diseasedGerhardt's (erythromelalgia) → I73.81
  • Disease, diseasedMitchell's (erythromelalgia) → I73.81
  • Disease, diseasedWeir Mitchell's (erythromelalgia) → I73.81
  • Gerhardt'sdisease (erythromelalgia) → I73.81
  • Disease, diseasedCrocq's (acrocyanosis) → I73.89
  • Nothnagel'svasomotor acroparesthesia → I73.89
  • Syndromehypothenar hammer → I73.89
  • SyndromeNothnagel's vasomotor acroparesthesia → I73.89
  • Angina (attack) (cardiac) (chest) (heart) (pectoris) (syndrome) (vasomotor)cruris → I73.9

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

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