2021 ICD-10-CM Code I77.70

Dissection of unspecified artery

Version 2021

Valid for Submission

ICD-10:I77.70
Short Description:Dissection of unspecified artery
Long Description:Dissection of unspecified artery

Code Classification

  • Diseases of the circulatory system (I00–I99)
    • Diseases of arteries, arterioles and capillaries (I70-I79)
      • Other disorders of arteries and arterioles (I77)

I77.70 is a billable diagnosis code used to specify a medical diagnosis of dissection of unspecified artery. The code I77.70 is valid during the fiscal year 2021 from October 01, 2020 through September 30, 2021 for the submission of HIPAA-covered transactions.

The ICD-10-CM code I77.70 might also be used to specify conditions or terms like arterial dissection and lentiginosis syndrome, cerebral ischemic stroke due to dissection of artery, dissection of artery or dissection of transplant artery.

Unspecified diagnosis codes like I77.70 are acceptable when clinical information is unknown or not available about a particular condition. Although a more specific code is preferable, unspecified codes should be used when such codes most accurately reflect what is known about a patient's condition. Specific diagnosis codes should not be used if not supported by the patient's medical record.

Index to Diseases and Injuries

The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code I77.70 are found in the index:

Approximate Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

Replacement Code

I7770 replaces the following previously assigned ICD-10 code(s):

Convert I77.70 to ICD-9 Code

The General Equivalency Mapping (GEM) crosswalk indicates an approximate mapping between the ICD-10 code I77.70 its ICD-9 equivalent. The approximate mapping means there is not an exact match between the ICD-10 code and the ICD-9 code and the mapped code is not a precise representation of the original code.

Code History

  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018