2021 ICD-10-CM Diagnosis Code I73.81


    2016 2017 2018 2019 2020 2021 Billable/Specific Code
  • I73.81 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2021 edition of ICD-10-CM I73.81 became effective on October 1, 2020.
  • This is the American ICD-10-CM version of I73.81 - other international versions of ICD-10 I73.81 may differ.
The following code(s) above I73.81 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 I73.81:
  • I00-I99
    2021 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 2021 Non-Billable/Non-Specific Code
    Type 2 Excludes
    Other peripheral vascular diseases
  • I73.8
    ICD-10-CM Diagnosis Code I73.8

    Other specified peripheral vascular diseases

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • diabetic (peripheral) angiopathy (E08-E13 with .51-.52)
    Other specified peripheral vascular diseases
Clinical Information
  • A peripheral arterial disease that is characterized by the triad of erythema, burning pain, and increased skin temperature of the extremities (or red, painful extremities). Erythromelalgia may be classified as primary or idiopathic, familial or non-familial. Secondary erythromelalgia is associated with other diseases, the most common being myeloproliferative disorders.
  • A rare disorder characterized by periodic inflammation and blockage of the vessels of the extremities, resulting in skin redness, swelling, and burning pain in the affected sites. It may manifest as a primary disorder caused by mutations of the scn9a gene or as a secondary disorder due to hematologic disorders or medication side effects.
ICD-10-CM I73.81 is grouped within Diagnostic Related Group(s) (MS-DRG v38.0):
  • 299 Peripheral vascular disorders with mcc
  • 300 Peripheral vascular disorders with cc
  • 301 Peripheral vascular disorders without cc/mcc

Convert I73.81 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
  • 2021 (effective 10/1/2020): No change

Diagnosis Index entries containing back-references to I73.81:
  • Acromelalgia I73.81
  • Disease, diseased - see also Syndrome
    • Gerhardt's I73.81 (erythromelalgia)
    • Mitchell's I73.81 (erythromelalgia)
    • Weir Mitchell's I73.81 (erythromelalgia)
  • Erythermalgia I73.81 (primary)
  • Erythralgia I73.81
  • Erythromelalgia I73.81
  • Gerhardt's
    • disease I73.81 (erythromelalgia)
  • Mitchell's disease I73.81 (erythromelalgia)
  • Weir Mitchell's disease I73.81

ICD-10-CM Codes Adjacent To I73.81
I72.5 Aneurysm of other precerebral arteries
I72.6 Aneurysm of vertebral artery
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

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